I seen him fight once and I wasn't highly impressed. I didn't see him in the same class as a PACMAN even though he's getting KO's and I damn sure didn't see him being worthy enough to even say the name Floyd Mayweather.
If I didn't know anything about him personally or simply did not find out and simply knew him for his "ring abilities" and his "potential", sure it would have been something to see how he would do with the best around his division. However, unfortunately now that we know what he eventually became and what a sick person he actually was, it's probably better for humanity if he weren't have been born.
If you want to see how good Valero was have a look at the Valero documentary. May have been an animal but a wonderful boxer not just a puncher.