'proved nothing', 'shouldn't have done it' ...... You're sounding like you support the Floyd Mayweather / Sugar Ray Leonard style of carefully managing one's career.

Pacquiaio is a fighter, he will fight anyone, and he will fight them as many times as they like. That's what I like about the guy, he knows he struggles with Marquez and doesn't look good against him, but he still gets into the ring with him. He knows Marquez is a deadly counterpuncher, but he still leads, pressures him and puts it all on the line.

That's one of the reasons that Pac is the fighters fighter!