Seems more like Hulk vs a GL with Godslayer, as Gamora herself doesn't make much of a difference. But...
Well, let's see. The GL Ring(and mastery no less) makes a big difference and tips the scales in her favor. Godslayer is kinda cheating, but what's there is there. Obviously she's Hulk's b*tch without the stuff. But with it, well, she's got her magic butterknife and decoder ring, so she takes it.
I hate it when magic butterknives come in the way of a tasty relationship.