Love all of the opinions stated as fact in here. You really can't mention a choice between consoles anywhere on the internet without the inner fanboy peeking out, lol.
Objectively, PS3 is the lead platform, but both consoles will be locked to 60fps and should look on par. If you don't have any desire for online play now, it may be beneficial to future proof yourself by buying the console that more of your friends have anyway. Sticks make controllers a non-issue.
Having played both versions, they look pretty much identical and run smooth as hell. I had issues with input on the PS3 version and dropped a lot of things I never would have otherwise, but I'm not a fan of the PS3 controller for fighters due to the separated d-pad buttons. More of the veteran players will be on Xbox, but a lot of us are buying both consoles just in case. Really, find out what your friends have and buy the one they have as a majority.