I don't see it for the following reasons:
1) The OL isn't 'nails-tough.' It's not a down and dirty, kick your teeth in line. If they can't do it at home in the hot weather against cold weather teams, they aren't going to do it in Buffalo or New England. They are soft.
2) Wanny doesn't have that toughness that Shula did. We used to win in December because Shula had a strong mental attitude instilled in the players. A tough as nails, we are going to win no matter the situation. And, most of the time he did it.
3) Our D is not designed to shut people down. They have good players and make some great plays - but they will not stop Tom Brady in New England. That means the best we can do is a wild card - which means no SB and DW is gone next year.
I will root for this team all the way in every game. But, the reality is, they have weaknesses at the top (coaching) and in the foundation (the OL) that won't get it done.