I'd say Golovkin would last longer. I saw Spence hurt by Brook. Brook doesn't hit like Sugar Ray Robinson. I've seen Golovkin take some flush shots from guys who had decent power, and he didn't seem all the worse for it.
I think so, and I think that Golovkin's chin would wear down before Robinson's did. Robinson took shots from punchers who had six ounce gloves on, while Danny Jacobs is taking Golovkin's best shots.