Ryan had a lot of tape on his shoulder cos he knackered it up. It's common knowledge! The fight should have never taken place, it's just that those dumb Gracies think (or thought) they were invincible & could take Saku with one arm.
And Renzo's arm being broke by Saku's kimura is fair enough, but no way was Renzo going to tap because of it (same as Silva/Mir). Again dumb Gracie thinking he's invincible.
I'm not a believer of Rickson's 400/0 record, in fact I think it's a load of bollocks, but what I have seen of Rickson in the earlier Pride fights he would have demolished Sakuraba in a breath.