Some people here are disconnected from reality. Bruno Mars is at least 5 times more popular and global (this is not important for Super Bowl tho, just saying) than Justin Timberlake. This fact isn't even up for a discussion.
They should've just gotten Daft Punk, but OH WELL.
Pepsi has had a lot of financial trouble recently, so Bruna was probably the only one they could afford.
Oh now you decided to drop JT and try with Daft Punk. Daft Punk is amazing but they are DJs, they don't sing or perform. It would basically be Daft Punk and guests.