The Cowboys are 4-1 and in first place in the NFC East.

So are they any good? They haven't exactly beaten up on power teams. The only team they've beaten with a winning record so far is the Washington Redskins and the combined record of the four teams they beat is 7-13. Hey, all you can do is beat the teams on your schedule, and the Cowboys are doing that, but it does bring up questions about legitimacy.

We will know more about them next week when the go to Green Bay to play the Packers, but they sure looked damn good Sunday beating up on the Cincinnati Bengals. And let's not forget they are doing this with a rookie fourth-round quarterback and a depleted defensive front.

The Cowboys dominated the Bengals, jumping to a 28-0 lead, as they won 28-14 to win their fourth consecutive game. Rookie quarterback Dak Prescott made it through his fifth game without throwing an interception, although he did lose a fumble, his first turnover of the season.

Prescott has been accurate, calm, and far better than anyone -- even those in the Cowboys organization -- would admit. He won Sunday without top receiver Dez Bryant for second consecutive week, spreading the ball around hitting six different receivers

It helps to have the best offensive line in the league blowing open holes to key the running game. Rookie Ezekiel Elliott ran for 134 yards on 15 carries and had a 60-yard touchdown run through a hole that a 300-pounder could have run through. The Cowboys line is dominant at times, and it was that against the Bengals.

We expect them to be good, but what about the defense? It's a unit that came in ranked 10th in scoring with only six sacks, but that unit had four against Andy Dalton. That's something that bears watching going forward.

Prescott is growing as a quarterback, which will make for an interesting debate when Tony Romo is healthy enough to play. Romo, who is out with a back injury, is expected to move back into the starting lineup. When he returns. There are some who will wonder why.

The Cowboys' offensive line has helped rookies Elliott and Prescott flourish through five games. USATSI

What if Prescott leads the Cowboys to a 7-1 record when Romo comes back? I say Romo still goes back in and starts, but if he were to struggle then it would be an easy decision to go back to Prescott.

It's not like Romo wouldn't have won Sunday against the Bengals. With that running game and defense, things were easy for the quarterback. The Cowboys have done a really good job of also making it easy for their rookie passer.

Now comes a much different test, playing the Packers at Lambeau. If Prescott plays well there, and the Cowboys win, they will be considered a good team with nobody bringing up their schedule anymore.

Coach Jason Garrett has done a nice job with this team, a job that puts him in the Coach of the Year conversation.

So are they good or not?

Right now, it's hard to argue they are not.

Here are some more musings from around the NFL in Week 5:

New England Patriots

When I did my list of overrated players this summer, I made tight end Martellus Bennett the choice for the New England Patriots.

I was wrong.

Bennett had three touchdown catches from Tom Brady against the Browns this week and has showed in the five games with the Pats that he clearly is not overrated.

Bennett, who has four touchdown catches on the season, teams with Rob Gronkowski, who is healthy now, to give the Patriots a nice 1-2 punch with a lot of formations and options open in the playbook.

They are both too big for defensive backs, but also fast enough to run by linebackers.

When Brady had Aaron Hernandez and Gronkowski, they were able to scheme up a lot of ways to get them both open and attack defenses. It's the same now with these two.

Bennett, who injured an ankle early against the Browns only to play through it, is not Gronkowski, but no other tight ends are that. He is a damn good weapon and a player who I was wrong about. See, I can say it.

Buffalo Bills

While I am sitting here saying I was wrong about Bennett, how about something else, too? I buried the Bills and coach Rex Ryan a few weeks ago. But after three consecutive victories, including a tough road win against the Rams in Los Angeles, the Bills are 3-2 and in second place in the AFC East.

Since firing offensive coordinator Greg Roman, the Bills are 3-0. The one thing that has stood out since is the renewed running game. LeSean McCoy looks like a different back. He ran for 150 yards on 18 carries against the Rams. In the three games since Roman was fired, McCoy has 330 yards after having 117 the first two games.

If McCoy was one of the players who talked with owner Terry Pugula, who pushed for the Roman firing, then he made one of the best calls of the season. The Bills are better now, and could go to 4-2 next week with a winnable home game against the 49ers.

Rex, call the realtor and take the house off the market -- for now.

Atlanta Falcons

One of the main concerns for the Falcons this season was getting more of a pass rush. They got it in a big way in Denver as Atlanta beat the Broncos 24-14 for their fourth consecutive victory.

The Falcons, who have the highest scoring offense, got a big-time defensive effort to beat the Broncos and rookie passer Paxton Lynch, who was making his first NFL start. The Falcons had six sacks of Lynch, but the most important thing was Vic Beasley, the team's 2015 first-round pick, got 3.5 of those. Beasley came into the game with just seven sacks in 20 starts. If he can get that type of pressure, the Falcons could be really improved on defense. Rookie safety Keanu Neal also showed up against Denver.

The Falcons face another tough test at Seattle this week against a Seahawks team coming off a bye. With that offense, if they can get a pass rush like they got in Denver, the Falcons could be legit.

Pittsburgh Steelers

I know a lot of people give Steelers receiver Sammie Coates a lot of grief because he drops too many passes. He dropped a couple, including a touchdown against the Jets on Sunday, but he also had six catches for 141 yards and two scores.

Coates has star potential. Yes, I said star potential. He is big, fast and seemingly is always open. Now he just needs to work on those hands. It's clear that Ben Roethlisberger is getting more comfortable throwing to him as a second option behind Antonio Brown.

I've always said I'd take a player who could get open with bad hands over one who can't with good ones. Coates will improve his catching, but you can't teach a guy to run.

Just what defenses need when going against the Steelers: Another big-play threat down the field.

San Diego Chargers

The Chargers have now lost four games by a total of 14 points and have done so by blowing second-half leads in all of them. The latest came when they lost to the Raiders at Oakland this week when a botched snap late on a potential game-tying field goal ended in no attempt and another loss.

Now comes the decision whether to keep coach Mike McCoy. The talk is he's coaching for his job, but what do they do if they let him go? Promote Ken Whisenhunt? Wasn't he just fired last year in Tennessee?

I am not sure a change is the right thing. But if these gut-wrenching losses keep happening, what choice will the Chargers have?

One thing's for certain: They are wasting some good years and games from Philip Rivers. He was really good against the Raiders, throwing for 359 yards and four touchdowns. The guy plays hit butt off every week, and for what?

Indianapolis Colts

I've said it for a long time, but the Colts need to play the entire game like they are in the fourth quarter. That means let Andrew Luck play faster and do more at the line of scrimmage. It's obvious he's a different quarterback when he's behind and allowed to throw it around because he has to do so. He threw for 322 and two scores to lead the Colts past the Bears Sunday.

Miami Dolphins

The Dolphins are a mess. First-year coach Adam Gase inherited a roster that isn't very good. Now he needs to use the rest of the season to decide if Ryan Tannehill is his quarterback of the future.

Tannehill hasn't played like it, but Gase said he would be the starter the rest of the way. That makes sense. He has to find out of he likes him or not for the long run.

Houston Texans

Texans quarterback Brock Osweiler sure didn't look like an $18 million-a-year quarterback against the Vikings. He was 10 of 42 for 184 yards, one late TD pass and an interception. They have to get more from him. The Texans have been blown out twice on the road, losing to the Patriots and now the Vikings.

Is Osweiler the franchise guy? That question hasn't come close to being answered.