nobody has said on this site lately that chavez sr. is underrated but it has been said before. and as far as your comments go:

in 1993 when they fought, chavez was 31 years old, whitaker was 29 years old.

chavez sr. was 87-0, whitaker was 32-1. question: who had more wear and tear considering whitaker was a defensive genius and a pure boxer?

whitaker started his career at 134 (Lightweight) while chavez started at 120. who was the bigger man again?