I believe someone gets knocked out bc of the styles...i would take Haye whos faster and hits harder..also harder to hit. He also has the better hair style compared to the Barney Rubble look Povetkin was going for which might make Haye fight harder not wanting to lose to someone representing himself like that..we know how vain Haye was.
Haye is a savage, he would probably beat Povetkin right now with two healthy legs, prime Haye would beat prime Povetkin, you only need to compare their fights against Wlad Klitschko.
Styles make fights,I think corn rows may be too slick a style for fluffy static charged strawberry blonde barnet