Saunders MADE Lemiueux look awful though. I don't think O'Sullivan even with the camp bear/strongman moustache is going to stand up to repeated smacks in the mouth. He is pretty easy to hit, and for a puncher like Lemiueux, that is manna.
Golovkin hit Cownelo all night long last time, but could not really wobble him repeatedly in the way he has consistently made other fighters fold. It is not going to be a walk in the park for either fighter but GGG may well find Alvarez offering his jaw on a plate if he really is as pissed, as is being suggested, at being called out for what he is. Neither is an unknown quantity to the other and it can't help but be a bit more personal this time. I think Golovkin can channel and handle that a bit better, while Canelo is more likely to let it sabotage his own ability to concentrate. GGG is remarkably cold and calculated even when hit hard, and that should be enough for him to put something together to stop a frustrated and tiring Canelo late.