This is a terrible article, and Mayweather is already way more highly regarded than Calzaghe career wise.

Calzaghe arguably lost against an far more aging Hopkins, while Mayweather decisively beat Mosley.

Oscar was far closer to his best than either Hopkins or Jones were when they faced Calzaghe.

The fact is Floyd is way better than Calzaghe, there is no comparison, he is already about 60 slots higher in the all time p4p list, and there is a reason for that.