A couple things:
#1 I been saying that I wanna hear a Gibbs and Ro collabo for a while now & I'm excited to hear it might happen
#2 I've only heard pieces of Cole World, but I am familiar with almost all of Cole's other projects. Is Gibbs nicer? It's somewhat debatable. Gibbs is definitely nicer with the flow no question about it. His delivery is also better. Cole is more witty with his lyrics and seems slightly better at making songs. Aside from that, neither one can really do what the other does, and they are very different rappers. Even though on some levels, I can more personally relate more to Cole, Gibbs is who I prefer out of the two.