Uh, Hurricane Grant had a whopping single pro fight. Unless he fought a bunch of unrecorded newspaper decisions against Klondike and Choynski, it's not much of a match. Jack O'Hallorn KO'd Rahman if memory serves.
Thanks, Groove. Like Ali, Rahman lacked a killer punch but possessed quickness and smooth movement in the ring. Probably the big difference between the brothers was Ali's sense of mission, his determination to polish his skills to become the Greatest.