Apart from the amateurs I'm still yet to see GGG in with someone close to Winky's style so can't be sure about this one.
I actually think that Golovkin posseses the ability to KO anyone. I mean we are talking about one of the hardest punchers in the division, ever. Would be an interesting scrap.
Golovkin could certainly outbox him as Winky was very capable of being outpointed. In a war I'd favor Golovkin, though it would be tough to knock out the turtle shell Wright. Who knows though, Golovkin hits as hard or harder than anyone Winky has fought, so if he hits him with a nice combination after putting in a lot of body work, he could stop Winky.
On the flipside of that,GGG hasn't fought anyone who has anything like the boxing brain that Winky had. And I remember what Winky did to Tito, who was rated higher than 3G is now. But anything can happen in this game. I just think not.