Out of the two Martinez has a much better chance to Beat Mayweather than Pacquiao dose. I'm not saying that Martinez beats Mayweather just that he has a better chance. When Martinez stays on the out side he's going to give Mayweather a lot of problems. However he sometimes likes to mix it up with his oppoents. When he dose this he's going to give away his size advantage and become an easy target for Mayweather's counters.