Leapai's a tryer but really doesn't belong anywhere near guys like the Klitschos, there's a world of difference between them. I reckon Joseph Parker (who won his fight on the undercard convincingly by TKO to go to 8-0-0 with 7 KOs) looks a far more realistic prospect, only 22 & looks like the real deal, power, technical skills, size (though he probably still needs to fill out a bit, but he has the height and reach), only issue is he seems to have a bit of a tendency to get cut, suffered a nasty one in his previous fight that sidelined him for a few months afterward.