Difference between Kosta Tszyu and Oscar De La Hoya when Pacquiao and Hatton fought them.

Tszyu was fighting at his natural weight.
Oscar De La Hoya clearly wasn't.
Tszyu 6 months earlier destroyed Sharmba Mitchell.
Oscar De La Hoya earlier got busted up by a blown up super featherweight in Stevie Forbes.
Tszyu was ranked top 5 pound for pound.
Oscar De La Hoya weren't even ranked in the top 20.

Just adding to Miles' post.