I'm not convinced the Pats lose to the Broncos. The Pats can beat them the way the Colts did on defense if the Pats are at full strength by the time they face the Broncos. I also think the Pats' offense will be better with Gronk another 5 weeks healed and Vereen back and will be able to exploit the Broncos' horrible defense. It is the most likely game the Pats lose (considering they are the only strong Super Bowl contender on their schedule left), but as someone said, it ain't a slam dunk.
In fact, I think the Broncos could have another loss or two by the time they come into Foxboro. They have a tough stretch after their bye in a week (@ San Diego, KC, @ NE, @KC, the Titans, and San Diego). Only one team with a losing record (Titans) and they might have a winning record by the time they face the Broncos with Locker coming back and a softer schedule after a brutal three game stretch (KC, @Seattle, San Fran).