He started out malnourished and raw. Taking losses to some fighters in his teens and at age 20. Then he hit his prime around 24 and lasted till 30. During this time is when he made his legacy. Barrera, Marquez, Morales and Cotto. He beat them all except for Morales who put up his last stand and decisioned Pacman 115-113. Nothing wrong with that, Morales is a true ATG. After 30 he started gradually declining and was no longer the total whirlwind in the ring he was before. But still had quality performances beating a notable fighter in Bradley. Now he just has to end it with knocking out Mayweather.
I agree. He had a Duran-like curve, with less fights of course-which is the case with pretty much everyone.