I chalk it up to bad playcalling in the last drive. There was a draw play on 3rd and 2 or 3 (I think) that got them nowhere, and they passed on 4th down when a run would have sufficed.
Banky, the Eagles are very good, I don't think anyone is doubting that, but the Patriots have won NINE straight games, facing 6 teams with records above .500 in that stretch, and going 6-0 against them. It doesn't matter HOW they won, just that they WON. And it is generally agreed that the AFC is much better than the NFC this year, so that ups the Pats a bit in people's eyes.
And don't forget that they have started something like 40 different guys this season.