Why is it a given he's been a "weakened" welter? He's never fought above that weight as a pro and always looked very strong, so it's hearsay. I think you could just as easily argue that his size and strength have always been an advantage. His two biggest tests by far have come against guys that were also big and strong at the weight, having both fought at 154 prior.

I give him virtually no chance, but his jab and the fact that he's technically the most sound boxer GGG will have fought COULD make it interesting for a while.