Slick, NE looks invincible right now. But it bothers me that the whole universe is on them. This line may very well get pounded up to 9 or 10. After the beating the books have taken this year with all the favorites covering large spreads week after week, I don't think they would let themselves get raped by John Q. Public betting on the odds-on favorite Pats in the biggest betting game of the year. Maybe there are more Philly bettors out there than I think, but I sure haven't heard from many.
To answer your question, I don't think Philly will win, but I am seriously considering going against my gut (and everyone else's gut) and taking them if the line gets high enough. Probably over-analyzing things, but something about Pats -7 doesn't smell right.