Every single top bjj guy that has ever rolled with rickson has said he is the absolute best they ever rolled with.
I don't care about the 400 -0 garbage, but we have seen him fight mma, and we have some of the best jiu jitsu guys ever saying he is the best.
I think standing that Saku would have given him problems. However rickson also had good takedowns unlike the other gracies that Saku beat. I think eventually rickson gets him down, and then once they are on the ground I think rickson taps him out.
I'm a huge fan of both guys. I just think that if royce could last 90 minutes with him, without Saku knocking him out or subbing him, that rickson wouldn't get stopped either, and on top of that I'll take rickson over anyone of that era on the ground.
Would have loved to have seen that fight though. Nothing but respect for both of those warriors.