QUOTE (Snoop @ May 9 2011, 10:22 PM)

You can't fully compare the two because there were two different Sugar Shanes at different points of his career. Floyd fought a Shane coming off a massive win against Margarito, the then recognized WW Champ of the world. Pac fought Shane coming off a draw against Mora, the guy that won The Contender.
Don't think that has much relevance at all. Mosley was still well past his best by the time Mayweather got to him.
Mosley getting a victory of Margarito was called an upset for a reason & that success shouldn't roll over to Mayweather's win when he never had any intentions of ever fighting Margarito himself. It was a blessing in disguise for Mayweather that he replaced Berto because before that he never seemed willing to take the fight. Not until an older Mosley was at that stage of his career, over-trained, coming off a long lay-off did he take the fight more due to being cornered..he got lucky! As for Mosley-Mora...Sergio is a tricky fighter that would give any trouble and/or make them look bad, not to mention 154 has never been a great division for Shane.
I think both version's of Mosley were really shit & don't give much credit at all to either Floyd or Manny for beating him when they did! But exactly what happened with both fight Floyd and Manny's fights against De La Hoya..down the track they will end up getting more credit than they deserve because of discussions like this. Both were average to very below average wins because fans will always say one was better over other victory, when imo neither is anything great! Mosley was close to 40, dropping back down from 154 at his age who was more gun-shy than ever (memories of the Floyd fight?) and clearly didn't want it enough to what was required to win against Manny!
But to answer the question to the thread, I think Mayweather-Mosley was a much better win and performance against a better version (comparing). At least Mosley made an argument of being the closest to beating Mayweather, so Mayweather for once in a very long time had to show something.
Mayweather fought his fight more than Manny did, hurt him more and despite not scoring a KD had Mosley in more trouble.
Both fights would have looked very different had they got Mosley in early 2000's and not early 2010's.