He certainly does these days! Three KO's, all against fighters who have never been knocked out before, on the spin. The knockout of Charr put me in mind of Joe Louis and his destruction of Braddock. https://www.youtube.com/watch?v=U2vRywLpXg4
I do disagree with you that it would be devastating though flea. Gibbons is too brilliant I reckon, Povetkin a bit too turgid. I think it would be very late in a grind or one-sided points.