I never made it over to WDW during the last Superbowl in Tampa (where I am from), but it did coincide with Gasparilla on Saturday (think Mardi Gras dressed up as pirates) and then of course the game on Sunday. I do know that I would not go down toward Ybor City (entertainment district) that whole weekend. There were people staying as far away as Orlando, though and tons of pax flying through MCO. I'm sorry I can't answer your question directly about parks, but hotels and flights may be hard to work with.
Jan '07 Pop Century, Mar '07 Day Trip, April '07 Off Property, May '07 OKW, July '07 POR, Oct '07 Pop Century (& MNSSHP!!!), Dec '07 Day Trip
Jan '08 POR
Feb '08 Pop
Mar '08 Off Property
April '08 AS Sports - I think - still gotta book it