Salvador Sanchez after the end of the 15 Round Era

One often hears talk of how great a legend Sanchez would have become had he not died tragically, but there is one often overlooked fact that bears consideration - shortly after Sanchez's final fight the 15 rounder largely became extinct. How much success would Sanchez, a notoriously slow starter, have had if his career had continued? I'm somewhat of the opinion that fighters like Arguello and Sanchez, whose styles so strongly stressed the championship rounds, would not have had nearly the same level of success had they come up in the 12 round era - and by fighting in such a strategic manner in order to feel out the opponent, may well not have been able to adjust adequately without losing much of what made them great. Interestingly enough neither were points fighters, but rather of the late stoppage variety. It's basically too risky to attempt to fight in the manner they once did (with the way judging often goes), and as a result of this implicit penalizing, their type of fighter is likely to never be seen in boxing again.