Its important to remember that Floyd has neither the chin or power of Margarito. Look how many shots it took to make Cotto crumble. Floyd would have to hit him like that for 20 rounds to get the same impact

Sosa lasted 12 with Floyd and Floyd was down vs Hernandez, Judah ( not counted ) and hurt by Corley. Cotto can hurt him too . Its a completely different fight stylistically