It`s hard to see how he could ever prove that, he has the ability to improve and become an ATG, but he will never face an opponent near Hagler`s level.
canelo would be knocked out in less than 3 rounds by joe louis ... canelo is not that good nor could he even beat an old ggg and was brought up by maywheather
The main issue for Canelo would be that Joe Louis doesn't weigh 168 pounds, if he did, Canelo would probably KO him. As it is, Joe Louis was 215 pounds and carried that weight well, so I think Joe gets outboxed until he wears him down through sheer size and KOs him. Kind of like how Dave Allen vs Mayweather Jr would go.
Joe wasn`t as easy to outbox as anybody Canelo has out-pointed thus far and would have to starve himself to make 168 so tat`s a moot point unless you are making a P4P arguement.
I don't think Louis possessed the power to keep Clen off of him and Louis had poor accuracy and he was chinny too
Maybe chinny against men that were much bigger than Canelo plus he punched far harder than Canelo most guys that weigh over 200lbs do, Louis would take Canelo`s power far better than Canelo could take Louis`s power, Canelo has never been hit with a shot by a fighter as heavy as Louis.
Canelo has never knocked out any fighter that weighed as much as Joe or had a reach like that with a jab like that, Smith cannot jab the way Louis did or throw fast combo`s like him either, Joe was a special fighter and too big for the tiny Canelo.
Bigger? He was far skinnier than Joe and lacked his powerful combo`s, Louis would have destroyed Smith, no way could Smith have gone the distance with Joe.