Obviously you don't know most Jr.middle champs was at least an inch or two taller with a longer reach than Canelo. And the reason Canelo doesn't have impressive punching power is because in the old days he probably would be fighting from Lightweight to welterweight which would've been his most natural fighting weight in his prime.And yes what does that actually say about a fighter like Triple G. If their was same day weigh ins today most fighters who are champions today wouldn't be champs.
Being two inches taller doesnt mean jack. Canelo is a huge middleweight and he's still in his mid twenties.