I am bullish this year - saying 13-4. I do not believe the Bills have the horses to beat KC this season. I also don't think they'll lose game one to the Ravens. The Ravens are certainly good enough, and built to beat the Chiefs, I just have a feeling we're going to catch them on a few Reid specials and am not sold that their O-line will hold up against some creative Spags blitzes.
I see two losses in the division (it's tough to win them all) - probably a Raider and Donkey loss. I could see Cincy knocking off the Chiefs as well. The other loss is "one of those games" that can't be predicted, but you know it's going to happen (like last year's opener - Toney tipping a pass in his hands to an open defender for the pick-six, for example).