GGG wins regardless. Quillin doesn't want any of GGG. The fight could've been made while they were both on HBO because there was no beef between GBP and K2 promotions. GGG wanted the fight. Quillin never responded. But now that they're separated on networks Quillin opens his mouth about wanting a fight with GGG knowing GGG has to fight exclusively on HBO. Its easy to call out a guy with a barrier in between you two.
Quillin made Rosado quit, i think he can do the same with GGG.
Quillin has the power to earn Golovkin's respect early on but i don't know if he believes in himself enough especially against someone like Golovkin. Of course you have to respect the power of Golovkin but not fear it, if he took the fight to Golovkin he could be destined for greatness but it's much much easier said then done.
When I was watching him against Rosado I noticed he had his eyes wide open every time Rosado was about to throw a punch lol he looked terrified or maybe it's just his natural instinct i don't know.
I would favour Golovkin to win the fight but Quillin would be a live underdog.