I don't think the media has an Eagle bias. But Pete Prisco definitely does. If you want reasons why the Eagles may be overrated I'll give you some.
Brian Westbrook had the worst rushing statistics in the NFC East of the four starting backs last year. He is also by far the oldest starting RB in the NFC East and is just coming off surgery. He also NEVER plays a full season.
When healthy McNabb is the best QB in the NFC East. But with the exception of last year he also rarely plays a full season. He is also the oldest starting QB in the NFC East.
The Eagles are relying on rookies to play significant roles this year. Rookie recievers traditionally take longer than most players to get a feel for the pro game, yet two of their top four options are rookies (not to mention their number one target is in only his second season).
The Eagles have replaced two fifths of their offensive line this year (not to mention their tight end). While on paper it could appear to be an upgrade there could be chemistry issues. With an aging, injury prone quarterback there could be major consequences if this line takes a few weeks to gel. By the time they get in stride McNabb and Westbrook could be watching from the sidelines.
The Eagles rely on great schemes and in game adjustments on defense. Jim Johnson was a master at this. Jim Johnson is gone this year. While they will keep his philosophy in tact they could never replicate his feel for in game adjustments. The Eagles had a great defense last year, but looking over the roster it is striking how ordinary their d-line and linebacking corps are (they do have a good secondary, even without the aging Dawkins).
The question is can the new D-coordinator get these players to perform as seemlessly as Johnson did? That is a big question that won't be answered until the season is played out.
The Eagles ARE talented. But they are not far and away the most talented team in the NFC, or NFC East for that matter. Their PR turnaround from the Bengals game last year to the preseason this year is the most miraculous thing I've seen since the Giants won the Superbowl in 2007. The major difference is that the Eagles were 9-6-1 last year and did not win the Superbowl.