NFL Playoff Probabilities are now available and will be updated daily. This is the same format I used last year.
Comparing my "fair" Superbowl odds to those offered by 5Dimes.eu, the Broncos appear to be a bargain. I have the fair odds listed at +175, with 5Dimes offering +250.
I also project the probability, point spread, and over/under of each possible Superbowl matchup. These look roughly in line with the 5Dimes futures odds. The most likely matchup is Broncos/Seahawks, in which the Broncos would be a 1 point favorite (it would also feature the number one offense against the number one defense).