Not necessarilly the style but a bit of how they look. Leben looks a little like a smaller Tito and both like to trash talk. Although, Leben is more of a stand up kinda of guy as oppose to GNP. Koscheck is alot more like Kevin with his blonde afro, muscular built and strong wrestler.
I think this is the closest that we gonna see Tito Vs Randelman.
well except for the actual face..hehehehe
Except that their personalities are completely different . . . and we can see from the training highlights that he armbars Leben.
So yeah, Koscheck and Randleman are like twins - wonder why I didn't see it before. ;-)