All the way up to middle from Fly ?? that seems a bit much These things are impossible to say that's why i hate these atg arguments there are so many uncalculatable variables that make it basically a fans personal choice who goes where , so debating it is pointless, if you decide he is in your greatest of all the time then he is ! There is no more to it than that. All any fighter (or any athlete) can aim to be is the best of their time and Manny is arguably that already !
I think a win over Floyd at WW would be the single best win ever, in anyone's career. Find me any other fighter, whos jumped 10 weight divisions, his 7th championship weight class and beat not just an ATG in that weight, but a prime, undefeated, p4p #2, formerly #1 ATG. Thats how good that win is. In a way, its a bit like Duran beating SRL at WW first time...but that wasnt Duran's 7th weight class yet alone 10th. Now if Duran beat Hagler at MW...that would have been something else.