I have watched alot of the Sugar Ray Leonard and Mosley and they are very close i give it to mosley by a hair but considering that he was 2 weight classes below Ray i give it pound for pound even between them and as far as Kos be i think the competion plays a big part in how great a fighters power is so i am not sure if shane was more powerful or leonard at welter simple had guys who could take the better punchs and better fighter all around but any how i will stop beating a dead horse and thank you you ice for your input i like having a good debate and that is all i have to say