Let me reiterate my point. Of course, i realize that 154 is not Floyd's optimal weight, and that he loses many of his best assets, that he possesses at his natural weight class.
I'm just saying that, any die hard boxing fan knows how damn skilled he is. I'm not asking him to dominate/KO, or even beat Sergio.
I'm just asking him to fight him, and show us his full arsenal/skills against someone that's naturally bigger, and almost as skillful as him.
If he doesn't win, who cares. As long as he gives him trouble, and shows off his full, technical brilliance, I'll be completely satisfied as a boxing fan.