This is such a tough call to make. Baltimore limped into the playoffs and needed some huge plays to get past Denver. They beat the Pats early in the season and Flacco had a huge game. Baltimore can win this game but it will take some mistakes by the Patriots defense to make it happen.
I'm not sure if San Francisco can walk into Atlanta to get a win either. Atlanta has been doubted all season but here they are at season's end with the best record and one home win away from going to the Super Bowl. Atlanta only lost one game at home all season and I'm willing to chalk it up to being a game that didn't matter for the team. Kaepernick seems like a great QB in the making but I wouldn't be surprised if he stumbles here.
I don't like either Harbaugh to win but I think San Francisco has the better chance.