When a fighter sweats naturally it makes them slippery, so to make the rubberguard more effective should figters towel dry between rounds? I don't think so..
I wouldn't say he is overrated, but he does just need to take his ass whipping and quit making excuses.
The whole point about the rubber guard is that if BJ can't get it behind GSP's neck and on top of his shoulders it has no choice but to slide down, it's on an angle where it will go down weather it is vasoline,sweat or dry.