Here's how I see it shaking out:
I think the Steelers will win because they have the edge in experience. The offenses and defenses matchup very well against one another and the Special Teams for both are sub-par, so we'll probably see a return for a touchdown. This game also has a high probability of going to Overtime, where it can only end with the opening drive going for a field goal and then the proceeding kick being returned for a touchdown. It would be a perfect ending to the season with the first Super Bowl to go to overtime, using the new rules, which costs a team the Championship.
Score? Steelers 30, Packers 27
MVP: Hines Ward