Definitely BJ. GSP just has incredible TDOffense which blasted through his TDD, his size also definitely helped as well. GSP has some really amazing TDD as well but the only reason I'd say BJ's is better is because we get to see it a lot more. Realistically, GSP's TDD is the fact that he's already got everyone on their back. In which case it's impossible to take him down lol.
That being said, we're about to have a new king on the block. My man James Tony is gonna come in here and show us all how it's done! He's gonna show that old man Randy how to wrestle with his 9 months of invaluable experience. What's that old man got? Like, 40 years of experience? That's nothing. Toney's gonna shoot from one side of the octagon straight to the other, blasting through Randy at the same time. He'll be on top and show his dominance in the wrestling department for the entire first round. Second round, maybe (if he'd be willing to give us this honor), he'd go ahead and pull guard. Give us all a little taste of what a 'gold belt' in jiu-jitsu can really do. I wouldn't be surprised if he got Eddie Bravo and Dave Camarillo both in triangles SIMULTANEOUSLY. He'll just play with that old man for the next 2 rounds. Shortly after that he's gonna blow of the dust off his hands and get his first knockout in 6 years. He's been saving his energy in all his previous fights for this moment, obviously. James Tony, by complete, utter dominance.