They were still on the list of the best boxers in the world whether or not you think one or two were left out. And the only one anyone thinks had any real chance of beating him in his prime was Manny. The thing about an idiosyncratic Boxing style that is alien to proper boxers, and has never actually been used against world class fighters (or anyone close to that level) is that it has a far better chance of getting you knocked out than it has of throwing them off. The science of Boxing evolved in the exact way that it did for a reason, it works. First master the science in general, then work on revising it. Conor has not, he is a low level amateur. You might as well believe that some really tough street thug would beat both Mayweather or Conor in Boxing because he is even less trained and therefore even more "unpredictable".