Honestly, I don't know. It's certainly possible. I can't see them making the playoffs, but I could envision a scenario, albeit unlikely, where they win between 6-8 games. It's just hard to know what the opponents will do, how the defense will be, injuries to star QBs we play, and other things.
The bills could sweep the Jets, split with Miami, beat the Colts. That's 4. I think they could beat Bengals, Panthers, Saints, Chiefs, Chargers and Broncos.
The only truly unwinable games I see are the two Pats, the Falcons, Raiders, and probably Bucs.
So I just don't know. Almost anything is possible.