WDW really doesn't have any restaurants with televisions.
Inside the parks, forget it. Even the lounges don't have televisions.
ESPN is the big go-to place, because it's for sure a restaurant with televisions that is guaranteed to be showing the Super Bowl and if you're in there you will be able to see it. But because it's really the only game in town, it's going to be a zoo. If you don't get there early you won't be able to count on a table for the game, and they don't take reservations.
I'd go with a resort lounge that serves food. In my opinion the best ones for this would be Wilderness Lodge or Old Key West (small bar, if I were going there I would go early) I or maybe the Rix at Coronado Springs, it had more than one television. Big River Grill has a TV in the bar. As for the other lounges I'm not clear on the locations of the televisions and whether they have more than one television. Crews Cup is a nice lounge with food but I don't know about being able to view the televisions.
Tambu now has two big televisions but is usually jammed with 'Ohana guests. I think bluezoo's lounge has only one TV and it's at the far left end of the bar.