Re: Arturo Gatti vs. Barrera, Morales and Marquez @ 130?
Barrera would be slick for him and bust him up. Although Gatti was a Big puncher at JL, Barreras chin was very good and could probably even beat Gatti at his own game. This would look like a mismatch at times but at others Gatti would make some rallys to creep back in the fight. After 9 great rounds (mostly won by Barrera). The ref rescues Gatti.
Marquez would outclass him and also stop him, although Marquez was succeptible to getting clocked, you cant count out Gatti landing a hail mary. But the more likely outcome would be midrounds or late stoppage for Marquez.
IF Erick fights a disciplined fight he would stop Gatti late. If he dukes it out he still wins but it would be a war in a classic.
All 3 are on another level your talking about first ballot HOF and greats. If Gatti gets in the Hall it will be because of the blood and guts warrior that he was not because of his skills.