With Pittsburgh and Cleveland, these two know each other really well so I would expect a close division battle. Pitt has been playing down to their competition lately but they do have a better overall team. This game is crucial for both sides but I would think Pittsburgh pulls it out simply because of their offensive superiority. The defenses of these teams are too inconsistent to evaluate.
The Dolphins game is an easy one I think. The Dolphins are at home but that's the only thing going for them. The Packers have a top tier QB commanding an offense with Randall Cobb, Jordy Nelson, and a healthy Eddy Lacy. The Dolphins have the mediocre Ryan Tannehill behind a joke of an offensive line and a stable of underwhelming RBs. Miami's defense is better than Green Bay's but the offensive discrepancy is larger.