Morales at 130 & 135 and 140
Barrera at 130 and 135
Marquez at 135, 140 and 147
Who wins?!
Chavez beats Barrera and morales at any weight. He was faded by the time he went to 147, I think the welterweight version of chavez would lose to the Marquez that fought pacquiao the 3rd and 4th time. But he's the best of that bunch.
Chavez vs Morales : Chavez beats him in all 3
Chavez vs Barrera : Chavez beats him in all 3
Chavez vs Marquez, Chavez beats him in 135 and 140, 147 would be a toss up but I would say Marquez since Chavez was not that good at 147.
JCC Sr. would've beaten all three Mexican legends, except probably Marquez at 140/147.
I think Chavez Sr. in his prime would have been more than a match for any of the three at any time in their respective careers, although the fights would have been magnificent it they could have happened.
Chavez all fronts
The great Chavez sr vs
Morales at 130 & 135 and 140
Barrera at 130 and 135
Marquez at 135, 140 and 147
Who wins?!