Wladimir v Calzaghe-who ranks higher historically

Both are 1 and 2 fighters of the last 15 years, no debate about that. But who do you rank higher historically. Obviously different weight categories. Both have pros and cons. Wladimir i feelhas ested himself more, and beating Haye, povetkin, pulev, Tony Thompson, Chis Byrd, Chagaev etc is better than Calzaghes resume. However Calzaghe is undefeated, never had a slopp loss like WLAD did in his early years. Sure Wlad proved in the maont brester rematch that hes levels above the guys he lost to. But still it is a blott on his resume. So who do you rank higher, style wise Joe culd not kncok out opponents like Wlad due to his brittle hands. But he has better hand speed, and more range of shots. Over to you guys...