Lucky for GGG, The Hawk wouldn't make it out of the first round. But even if he did, I think GGG could take his power as well.
Hawks power seemed to be ridiculous, McCellan, benn possibly came close but doubtful. We need a graph, someone really dense to let the hawk test it out on...a few here YY is a prime candidate either that or a crash Dummy, well the same really lol
Neither has Canelo and he fought bigger punchers than Golovkin did. So if G is hard to stop , Canelo is practically impossible to stop.
Would have to be someone with real good power, and more importantly, accuracy and timing to score on GGG when he's more off balance or over committed. Guys like Hagler, Steele and Fitzs if they can time him flush, which they are capable of. Possibly Lausse or Valdez, who is a better, harder punching version of Canelo IMO. I don't actually see it happening though. GGG has a ridiculous ATG chin.