Heres an honest answer, ali in his prime id say right about befor ehe went into exile that is would mos tlikley beat everyone on the list, he is one of the few fighters he could fight backing up and could do it against tyson, if tyson fought either a very young ali or th eolder version I think he could win as ali as a youth was a bit arrogant and could not carry his hands low against tyson and no staying on the ropes.. but provided he knew tyson and had seen him fight he would win, he would outbox bowe, he would outbox lewis without a doubt, holyfield actually would giv ehim a tougher fight as he most resembles ken norton in style no huge punch better boxing ability and certainly a greater chin than norrton, i jus think alis reach would be too much for him and hed get out jabbed. Ali beats him all he had the tools and the brains, thats the problem with mike never had it upstairs