I think each side has some points in their favor:
Houston is the home team
Cinci has late season momentum
these 2 cancel out.
It will be a close game. If Matt Schaub can stumble into a great pass in stride to AJ for a quick touch down instead of 3 and out or worse, a pick - this will pump up the defense and give them the extra will to fight.
Should they win, it's going to take a miracle to win the next game