One is all about offense, the other all about the defense.
The defensive team has a head coach with an offensive background, while the offensive team has a head coach with a defensive background.
So which of the two is built to sustain it?
I will go with the Broncos. Offenses win championships now.
You have to be able to score. Look at last year's playoffs. Now tell me about defense. San Francisco and Baltimore were considered defensive teams, yet there were 65 combined points scored in the Super Bowl.
The Chiefs, who are second here in my Power Rankings this week, are the surprise team of the first six weeks, and they deserve all the props that are coming their way. But why do I still have major reservations about their team?
It's all about the style of play. I have been thoroughly impressed with their defense. It is a unit that leads the NFL in sacks with 31, more than they had all of last season. And they have a loaded roster of defensive players.
The offense is another story. It is just way too limited. Alex Smith dinks and dunks and they don't scare anybody down the field. The Chiefs are 25th in total offense, 26th in passing and 27th in third-down offense. That isn't close to being good enough, especially in a passing league.
But you can't take away what they've done so far. And with three less-than-challenging games coming up, they have a good chance of being undefeated when they play the Broncos Nov. 17 for the first time.
Are they better than Denver? No. Can they beat them? Yes. But in terms of postseason sustainability and long-term success, if Kansas City doesn't crank up the offense they can't win it all.
I don't want to rain on their early-season parade, but I just think their style can only get them so far -- and that's it.
So of the two remaining undefeated teams, my preference is the Broncos. I will take offense over defense all the time.