The momentum is clearly not there for the Bengals. Any team that loses to two non-playoff teams at the end of the season deserves to get the first-round heave-ho.
The Bengals really have a good team this year. This third game, the "rubber match", will tell the tale of who has the better team. But if the two best teams are going to meet in the Super Bowl this year, I think it wll be the Seahawks and the Colts. However, strange things can happen in football games. The better team can and has lost many times. Luck and poor officiating can turn a game on its head.