Katy.

Gaga or Rih.

Katy nor Rihanna are known for their performing skills so Gaga. She already has plenty of memorable hits and can put on an amazing show.

Rihanna or Katy.

P!nk

Oops, voted too soon! Voted for the one who I thought would deliver the best show which would be Gaga. In terms of chances, definitely Katy.

Rihanna and Lady Gaga as a part of duet with someone.

I think Rihanna could get it, she has such a massive catalogue of hits, and since a big percentage of them are either are others' songs that feature her or her songs that feature other artists, she would have a lot of guests that she could bring out.

Gaga, I don't see it. In addition to her decline in popularity, she's become very niche and really mainly appeals to gay men. Not exactly the Super Bowl demographic. She would give a good show, but even Madonna appealed more to straight men than Gaga.

I think Katy has enough hits (even after just a few years) and appeals enough to straight men that she could pull it off too.

Rih.

Definitely not Katy.
I don't wanna sit through a 12 minute "performance" from her.

Katy no
Gaga depends on where her career is or isn't in a year.
Rih has many hits is still relevant and can perform well when she wants to. And it being the SB I'm sure she'd put her all into it. Or lip sync

Katy has the best chances because of her success and her equipment appeals to straight men as well

Katy is she keeps improving her performances like she has.
Rihanna would be too risqué

Probably Katy.

Rihanna and Katy are coming!

I think Katy will do it in the next few years.

The icon and Queen of Everything