I've recently saw a RJJ vs Prince and though RJJ won a one sided decision, his ability to get off trouble are somehow limited. He gets pinned on the ropes quite easily and against above average fighters Roy would be in deep trouble. I saw how Glen Johnson attacked him with a lot of pressure and if Roy's performance would be like that of Prince, he may be KO'd as well on the rematch, if ever it would happen. Don't know if he can regain his abilities, he was unbeatable really.