Here is what folks who think like you fail to realize. just because some guy on the internet says Floyd had the chance to be this or that doesn't make it so. What Floyd could have been had he fought xyz. I'm pretty sure his status among the greatest fighters who ever lived is pretty secure. I think it's comical calling a guy who's beaten 20 some champions a coward because there is butthurt because "he didn't test himself. Well I suggest any person who posts here go on a 18 year run like Floyd then come back and tell us all how easy it was and how you never tested yourself.
Its Floyd Mayweather Jr. But there is a host of others: Bob Arum Adrien Broner Angel Garcia Tyson Fury Al Haymon Alex Ariza etc