I have to say that I hated Sanchez for many years because he beat my childhood hero Little Red Lopez. Now I just dislike and I never will forgive him.
That said, he was very good, but the idea that he was the best is too much. Ruben Castillo fought Arguello and Sanchez within 90 days and said that Arguello was much better and would ko Sanchez. He also said Chavez was much better than Sanchez.
But you can not be as good as Chavez and Arguello and still be very good.