Really to me anyone who gets in the ring with another world class fighter is a warrior. I mean come on they put their life on the line every time they do it so it has to be deemed as a warrior mentality. Fair enough some people have a more exciting style where they take more punishment to give out their own (Gatti, Margarito etc) but to suggest that the likes of Tszyu and Cotto are not warriors is insane.

Definition of warrior:

war·ri·or (wôr-r, wr-)
n.
1. One who is engaged in or experienced in battle.
2. One who is engaged aggressively or energetically in an activity, cause, or conflict