The way i see it is Golovkin would be one of the 3 best apponents Nunn has ever faced. The other two being Toney and Kalambay. I favor Golovkin over Tate, Roldan, Barkley, Starling, Curry, Yonker, Cardoba, Ashley, Sosa, Little, Liles, Rocchigiani, and Guthrie. So style wise it is in the realm of possibility that Golovkin could catch Nunn with an Ishida type of KO punch over the hands down gangley alusive Nunn. I could also see a possible war where GGG takes Nunn to the trenches like he did against Ouma, before wearing him down and possibly stopping him. Then again I can also invision a solid close fight similar to Golovkins close win over Jacobs, who was fighting out of his skin on the night of their fight. A close decision either way is entirely possible as well, at 160 lbs, at 168lbs Nunn was slower and less affective as was GGG, so things even out there too. GGG is bigger and slower at 168lbs, but still fundamentally sound, incredibly strong, durable and hard hitting. I could see him getting to the more vulnerable 168lb Nunn over time, or possibly being out hustled. I would love to see this fight at both weights. I would be rooting for GGG though, as you might have guessed.