Cutler is going to be doomed by high expectations. Plummer got them to the AFC title game, so if Cutler can't get them past that point (something even a prolific passer like Manning has never done) he'll be considered a bust.
I think Cutler does have a good head on his shoulders, which will be strange considering his team is being led by a fiery man-boy right now. But who knows how he'll do in pressure situations, whether he will flourish or crack.
I don't know if fans can see this coming but the Jake/Jay debate will be bad for the locker room and it will be ludicrous if the Snake gets injured. Starting next year Denver will revert back to mediocrity for a couple of seasons before returning to form.