Most if not all of the Carnival ships have a sports bar. I'm a huge Nascar fan and I was able to watch the Daytona 500 on the Carnival Legend 2 years ago

. I thought that I'd be the only passenger interested in watching the race but turns out the place was packed and everyone had a blast. If there is a sports bar on the ship, the Superbowl will be televised for certain.
I just got back from my New Years cruise on the Miracle yesterday and they had an excellent sports bar! Lots of tvs. If you're sailing on the Miracle, this is one of the my favorite ships in the entire fleet. Will write a review soon.
Go Patriots...oh wait, 11 & 5 and we didn't make the playoffs

Guess, I'll have to root for the Celtics & the Bruins till Red Sox Season. It's rough being a boston fan these days