He's proven to be not much, if at all better than Chisora thus far. Put him in the ring with the guys Chisora lost to (prime Haye, Pulev, Vitali Klitschko, Fury, Usyk and etc.) and I see him losing all those fights. The only opponent I see Ortiz beating who Chisora could not beat, would be Agit Kabayel.