Cleveland is absolutely terrible. You guys should have no problem beating them at home. Their special teams coverage is poor, they cant run the ball and they cant stop the run.
They CAN however, rush the passer. Their Defensive Line can get pressure up the middle and this kid Luke McCown is pretty quick but is inexperienced and makes mistakes. If Buffalo can get pressure on him and keep their WRs from making big plays down the field, you should win handily.