If you swapped Maidana out for Porter in the first Mayweather fight, what do you see?

Off the top of my head, I think I had it 116-112? for Floyd in the first Maidana fight. So now I'm wondering: what happens if you swap Maidana out for a guy like Porter? A real welterweight unlike Maidana, but just as aggressive and wild with fantastic conditioning. I'd imagine just as strong, as well. I want to say Floyd wins a very close split decision, but what do you all think? Maidana gave Floyd he'll that fight, can't imagine Porter not doing the same.