When you compare both Mosleys and Marquez' performances against Mayweather back to back. Both got completely schooled in every aspect but the difference is in 1 round Mosley had Floyd hurt whereas Marquez was dropped by Floyd in 1 round.

After two attempts Marquez has failed to convince the judges he is better than Pac so its probably time to let someone else have a go. Mosley is bigger than Marquez, obviously hits harder and has a better chin. Lets see how his style does against Pac instead of Marquez again. Ideally it should be Sergio vs Pac but if it were between these two faded greats Id go with Shane.