Heart is funny. People like to think it's just something people have more or less of, but it's way more complex, and all sorts of people show loads of heart in some situations when really up against it, while also having times where they seemingly could've done a lot more to win.
Fair call. But Haye left himself open for criticism with the amount of talk he did pre-fight about leaving Wlad quivering on the canvas and the t-shirt of him holding both Klitschko brothers decapitated heads. And then he fought an overly timid fight which put paid to all that nonsense. Obviously Haye had the guts to perform as an elite pro fighter but he didn't have the bottle to back his big talk up against the best heavyweight of his generation.