Barrera will have the better legacy.

He evolved as his career went on
Morales got worse
Barrera learnt from his defeats
Morales didnt
Barrera has longevity
Morales already looks faded even though he is the younger man
Barrera was already world champ before Erik was on the scene
Plus Barrera won the trilogy 2-1 ( should have won the 1st fight too )