I believe his power would be just as dominate in 168 as it is in 160 or any weight class he decides to end his career at. I feel he could be just as a dominate force as a fighter at that weight and capture championships. I feel that he could take care of Kessler and Calzaghe and he has already beat the next title holder at 168 in Jermaine Taylor. Who cant this guy knock out? He has knocked out anything put in front of him.