Yea, it's not only getting him down, but keeping him down too. I think Cain could possibly do it, but heck, maybe not, nobody else has. I agree, I wouldn't underestimate DS's ground game either....it's amazign in all his fights, we haven't seen what he is capable of yet. That is pretty amazing. Cain will have to do it with technique, because even Carwin couldn't get him down through power alone...and he is a large framed strong guy.
I just want to see a good fight, but it could easily end like the last one did.