Both teams have a top 10 offense and defense, so these are applicable:
Philly D vs top 10 offenses (in meaningful games):
3 times (MIN, GB, MIN) 15.6 ppg
NE D vs top 10 offenses:
5 times (IND, SEA, STL, KC, IND) 17.6 ppg
Philly O vs top 10 Defenses:
4 times (WAS, WAS, PIT, BAL) 15 ppg
NE O vs top Ten defenses
9 times (BUF 2, NYJ 2, MIA 2, PIT 2, BAL) 26 ppg
Blend em and you get:
NE 20.5 PHI 16.5
Under anyone? To be honest, not sure why anyone thinks Philly will be able to put up enough points to get this game over the total.