Mike Tyson but Fury can get there if he has a few more good wins and retires undefeated. Should be mentioned that in his prime, there was a craze about original Tyson that is hard to describe to those that were not there. To some, he will always be one of the greatest if not the greatest. To critical boxing fans, his actual accomplishments were mortal.
Mike Tyson by a long margin. Mikey was about 12-4 in title fights while Fury is still only 4-0. He beat Klitschko and his trilogy with Wilder is nice, but that does not an ATG make. If Fury cleans out his division like Mike Tyson did, we can talk. If he beats Joshua, Usyk, Whyte, etc. Actually, Fury is about where Tyson was 32-33 fights in. If he can defend a belt for three or four years maybe he can make up the difference.
Fury as an active fighter has the opportunity to overtake Mike Tyson but at this stage he's still at the "Mike Tyson as a HW Champ pre-Spinks" level. So at this time, Mike is still very far ahead.
