Is that why the Patriots have smoked that defense 3 games in a row? 
Offense helps defense, and if you dont believe it, ask the Miami vets on D during that wildcat Dolphins year. By being on the field and putting points on the board, the offense can help out the D and put some extra pressure on the opponent. It is a simple fact.
Tim Tebow was shut down by Belichick and going 3 and outs constantly does not help Denver's D. So, throw 2 games out of the window and I will give you the latest one where the Pats' O-line ran over Denver with Peyton as QB. Denver's D has its weaknesses like the Pats' D, it is not the 85 Bears D but if you give it some points support, at home, it can definitely live up to the challenge, IMO. Both teams are still reliant on their QBs and only 1 of them will end up victor if the game is played in Denver. I believe it will be Peyton and the Broncos, you believe it will be Brady and the Pats, and that is perfectly fine with me.
Only one way to find out, right? Play the game.