Interesting thought though is since the squares probably had one of their better years, ie. they ain't broke yet, you probably will see a bit more shading to the favorites.
The first person I was ever associated with in gambling, a local back in the 80s said one thing that I and most people who have been around never forget, "If the sucker beats me in week 5, he has a problem. If he beats me in the Super Bowl, I have a problem". His thinking was clear, he never minds losing to suckers at any point before the end of the regular season. He knows they will lose it back eventually. If they actually have enough money to make any kind of sizable wager in the Super Bowl and win, then he is screwed because the guy had a good year and likely will spend all that he wins before September rolls around again.