Hard one to call. I think that this fight would have been closer at lightweight than any other division they have fought in as i believe this is when they had equal speed. I think that Mosley certainly had the power over Floyd but I think Floyd had the boxing skills over Mosley. I think that I would go for Floyd though as I think his defensive genius would eventually frustrate Mosley and his brilliant jab and counter puncjing skills would keep him in a close fight for the first 6-8 rounds before the frustration started to creep in, although I would give Mosley a chance of knocking anyone out at lightweight so there is always the chance that he would have caught Floyd and knocked him out. That said though apart from Hernandez no-one ever put Floyd down and a bigger hard punching De La Hoya caught him with some nice shots that he stood upto. Also when ever Floyd was struggling in the early rounds of fights he always seemed able to figure his opponent out quickly and turn the tide. So my opinion on this one is that this fight would have been similar to the Maywether v Judah fight when Zab started off the faster but the genius of Floyd worked him out, frustrated him and then quite easily beat him, the only difference being that he wouldnt have easily beat Mosley (far from it).

I have refused to use a common opponent in De La Hoya as:
1) The De La Hoya Mosley fought was a prime De La Hoya and the one Mayweather fought was slightly over the hill but still a very game competitor.
2) Neither of them fought him at lightweght. (Now that would have been interesting all 3 in their primes at lightweight).