Really do not see him holding up as well as Scypion. As a matter of fact, that's a good match----Wilfred Scypion and Canelo.
People tend to forget how good the 2nd tier MW's were back in Hagler era. Scypion, James Kitchen, Fletcher, etc. (NBC SportsWorld, Sunday afternoons in the good ol' days)
It would never happen, a guy that ducked GGG for a couple of years is going to fight Hagler? Brutal knock out if it did.
Canelo doesn't have any advantges unless you count "official weight on fight night", which would do nothing for him in the fight. Canelo can't box nearly as well as Hagler, he isn't going to win a brawl with him. Hagler is one of the greatest MWs ever. Canelo is a good fighter, nothing more.
That's what the record says. Auitofermo had Haggler hurt and holding on in the thirteenth and fourteenth rounds of their first fight.