Even if Browns lose, they could still go 9-7 and the Bills could lose rest of the way and finish 9-7...At that point, Cleveland still owns the tie breaker unless there are multiple teams involved with the same record.
Houston has choked on all big games.
Cleveland over Pittsburgh
Tennessee over Indy
KC over Oakland,
That will allow only Tennessee to go to 7 wins...Everyone else will be at 6 wins...that keeps the distance at 3 games. The Browns still will have to play Baltimore,