At least OScar made a fight of it. If he didn't wear out at the end, he could have pulled it off. Floyd never initiates in a fight, and is entirely a defense first fighter. Then he has the guts to compare himself to Ali. So called boxing purest today will praise Floyd's style, but its boring as hell and nobody likes it. Agression is a category of scoring.
His best fight was against Gatti, which I hated to watch. He brutally picked him apart. Much being Gatti's fault, as he always left himself opened too much.
Thats part of Floyd's style though, making people tired by being defensive. If you keep punching and either not hitting anything or his arms the whole time its gonna get you tired. Floyd has 24 knockouts, so he can bring the fight, he is just smart and lets the other guy get tired first.