Sultan is probably the best boxer-mover in the heavyweight division, and a very solid fighter, but so was Chris Byrd when Klitschko faced him, and Byrd was a southpaw, now Sultan hits harder than Byrd, but he is slower. I think that Wlad's jab will set the distance, bust Sultan up, then his right hand or left hook will take Sultan out. Wlad has incredible strength and power, and he is too good of an overall athlete IMO for Sultan.