I imagine the media will be billing this game as a rematch of the Fail Mary Game. Truth is, both of these teams are better and quite different than they were 2 years ago.
Russell Wilson is a much bigger part of the Seahawks offense than he was then. It wasn't until later in 2012 that Wilson would start to assert himself. Percy Harvin is a better big play threat than the Seahawks had at the time. Defensively, the Seahawks have become the NFL's best defense and play with the confidence that comes from propelling the team to a Super Bowl title.
As for the Packers, they will go into this game with much more offensive balance than they had in 2012. Instead of a near-the-end Cedric Benson, the Packers will go into the game with their best trio of running backs in a decade. And a stronger offensive line, despite having a rookie at Center. Expect the Seahawks to do anything they can to confuse Linsley.
Defensively, the Packers are stronger in the defensive backfield than they were 2 years ago, stronger at OLB, but have a question mark on the defensive line. How the line holds up against Marshawn Lynch will be a key.