Y'know, I just watched that entire fight, & I know hindsight is 20/20 but I think that fight started him down the path that led to the injuries he suffered in the Benn fight. Mclellan took some monster shots & was visibly rocked on several occasions, & in the 4th he started blinking & his body language got weird at times.
On-topic: I know I always say this about historical matchups including today's fighters, but when does everybody think Canelo last weighed 160 on the day of the fight?
My guess is, probably for Jose Miguel Cotto, in 2010.
I know it just looks like snark (hey, some of it is snark), but I don't think that sort of thing can be overlooked: he weighs 175lbs plus at "middleweight", & he either wouldn't look like that versus those fighters ('cos he'd be drained as fuck fighting in that weight division) or we'd be discussing how he blew away a guy who had a fifteen pound weight disadvantage.
Boxing's weight divisions are no longer directly comparable across eras, is my point.