Mayweather would win most likely. But he isn't exactly young and is considered past prime now by the end of the tourment one of the younger fighters may upset him. The super 6 took a few years to complete and with delays and injurys that these type of tourments tend to cause Floyd Mayweather would be older and that is a chance for the other fighters.
Floyd over Cotto in the finals Trout is good, but unproven. He could end up pulling an Andre Ward, but I doubt it. Canelo only fights junior welters and welters. GBP comes up with an injury and pulls him out. Vanes just can't match either Floyd or Cotto. Lara is the wildcard, but greatly underwhelmed his last fight out. If he gets slotted against Cotto later in the tourney, he could pull off an upset.
think mayweather would win it but i would love to see Alverez win it think he has what it takes to be the next big thing needs to step up now with some bigger fights