We will definitely agree to disagree. My main issue with your argument is you keep bringing up fighters that fight absolutely nothing alike. Every fight is different. Devon Alexander shut down Maidana, yet Maidana gave the great Floyd Mayweather hell. This is boxing. Styles make fights. This shyt is going to happen.
Nygga, Shane was considered washed up and the underdog in the Margarito fight. He was past his best. That Shane would beat Maidana's ass. I'm not even high on Mosley like that, but the shyt Maidana brings to the table is not going to work on Mosley. Mosley is bigger, faster, & stronger & he is not going to be able to punk Mosley around.
Shane struggled against Sergio Mora. What weight class did that take place at? It took place at 154. Shane has NEVER looked good at 154. Why aren't you taking that into account? Why aren't you taking into account that Sergio Mora is actually a good fighter? He beat Vernon Forest. He gave Danny Jacobs hell. Maybe he's look at as a joke because of the "contender" series, but he's a solid guy that comes to work. Most importantly, why are you using a guy in Sergio Mora, as an example, who fights absolutely nothing like Maidana?
You could have at least used Mayorga (the first fight), who is somewhat in the same lane. That maybe would have helped your argument. There's a problem using Mayorga though. One, that fight took place at 154. Two, Mayorga weighed in a 180 the night of the fight.
Your telling me Shane would struggle with Maidana at 147, because he struggled with Mora at 154. Let's assume Maidana is the "better" fighter. You do know that the Maidana fight is a better fight for Shane than someone like a Mora that boxes & moves right?
Floyd Mayweather is my favorite fighter of all time. However, I do NOT think he is unbeatable. No one is. I call it like I see it. The Floyd Mayweather that first moved up to 147, from '06-'07, while he was getting acclimated to the weight, is the one time in his career where I felt someone could have gave him a loss. He won those fights, because he's that good. The point is, yes I believe Antonio Margarito would have caused major problems for Floyd in that point in time.