The Mayweather fight was boring, all he does is 1-2 punch and run away. THATS NOT a great fighter, he's like Tim Sylvia, he fights to win not to entertain, thats why everyone cheered for Del La Hoya.
And he wouldnt last in the UFC, he goes on like he would knock out any man. The fact is he would get his 1-2 jab out, get taken down and have his fast little arms broken.
He wont step into the octogon not because of the lower pay packet (im sure Dana offered arounf 10 or even 10 mill) but because he knows he would get destroyed. He does all this for publicity, but good for him, all it does is let boxing fans know what MMA and UFC is