Personally I always thought the Superbowl should be played on Saturday. Nobody works on Sunday so they have it to stay out real late and recover while some might not be able to get Monday off.
I know the tradition is Sunday and a lot has to do with TV ratings which bring in the gold for the NFL but it's the Superbowl so ratings are not going to suffer and other revenue streams such as bar/restaurant sales, grocery sales (more beer will be bought), etc. will go up if people have less commitments the following day.
Regardless, the game will be played next Sunday and you can put everything you have on that.