To be fair Calzaghe is at the end of his career, wait a little bit for guys like Cotto, and rest, but what about Marquez and Vazquez they have a list of healthy competition. Margarito doesn't have the same resume as Calzaghe but its pretty good. Winky Wright who I think is still in top 10 p4p contention has a better resume then Calzaghe.

But if you go by age Cotto is way ahead in competition if not almost equal regardless in terms of competition with Calzaghe.
Magarito is close as well, especially if he faces Mosley.