One thing that adds to the spice of the NFL is that come playoff time all games are do or die. Unlike other sporting events, there's no best of 3 or 5 or 7---it's lose and go home! In this sense, statistics does not really matter in forecasting who will meet in the Superbowl. The team who gets the better breaks win!
By default, the defending champion is expected to repeat, but then, there's only a handful of Superbowl streaks in NFL history. So I guess this would be wishful thinking. Look where the New Orleans Saints are right now?
We are now down to the NFC and AFC championship. Pittsburg Steelers vs. New York Jets. Chicago Bears vs. Greenbay Packers.