Fair enough. Even so, Ali had amazing skills. It's not that easy to tell if Mayweather is better skillwise, even if we're talking about a tremendously gifted fighter like Floyd.
Then Calzache who is undefeated as well is better than floyd since he defeated Roy Jones and Hopkins.
Mayweather has also said that he's better than Sugar Ray Robinson. He's ****ing delusional. He can't even be considered a great fighter yet, and he's comparing himself to legends. I'm sure he thinks he's the greatest fighter of all time. He's not even the greatest of his era.