I think you have YOUNG Toney confused with OLD Mayweather. If Canelo goes defensive against Toney, against YOUNG Toney, then JT isn't gonna be content to just pot shot his way to a decision like Floyd. He's gonna open up on the Ginger and go the kill. That's why I say Toney by stoppage. I'm 200% sure that Crapnelo wouldn't see the final bell against a young Toney. Toney would hitting the Ginger cleaner than he's ever been hit before, harder than he's ever been hit before, and more frequently than he's ever been hit before. All the while, punishing his body to weaken him. Canelo goes out like Charles Williams.
I think once people saw Ali trying to light the flame at Atlanta in 1996 that the shift towards cagey fighting, functional size advantages and Consumer Price Indexed saving-schemes started gathering pace in the sport of boxing.