Its not about what you've done its about how good you are.

Mayweather is the clearly the best welterweight and the champion of the division
Cotto is clearly the second best fighter in the division

then there is a whole group of contenders
ODLH, Mosley, Margarito, Williams, Quintana, Judah, Clottey that all fall in the about the same category even though IMO ODLH and MOsley are better than the rest of them.