The Bills have a fairly easy schedule next season, but who's to say they'll make the play-offs? And why would the Colts beat Denver again?
I agree with the Colts beating Denver again because Peyton will be 39 years old and really should either be coaching or with ESPN or NFL Network. At this point Andrew Luck is at least on par with Peyton Manning, maybe slightly ahead.
That said, I think depending on what happens with DeMarco Murray and Dez Bryant in Free Agency, Dallas has to be considered the favorite to repeat as division champs.
One more note, New England better not win another Super Bowl...
Like you said, though, this is all a shot in the dark at this point.