This is one of those debates that we can argue until we are blue in the face. As far as common opponents...i think Junior Jones was just one of those fighters that was a stylistic problem for Marco. As for Manny, i will hold judgment on that one until a rematch with Marco. I just feel Marco is a more complete fighter. Barrera didn't fight Chavez and Chi so that's a mute point (though I personally feel he could have beaten both). Both Marco and Eric are great fighters....I just think Marco is the better all around fighter.