Beyonce never bothered to invite Gaga to perform with her at SB. She ain't gonna invite Beyonce either. Tony Bennett has a bigger chance being there with Gaga than her
DO IT.
Could be a small chance for revival for her.
Although I don't see big ratings if she does it since she isn't popular anymore.
ratings have very little to do with the artist 100-130M people would be watching the match regardless, it depends on whether the game will be good or not.