Wow, tough pick actually. Both had/have great power, same kinda size, both gas easily. Bruno made good use of a solid jab, Haye has thrown about 7 jabs in his whole career Although I think Bruno is an overall better HW at present (not as talented but he accomplished a decent amount), Haye is very VERY good at countering jabs with overhand rights, and he lands them with a lot of speed and a hefty force. I can't see Bruno taking too many of those. That said though it's obvious Bruno has the power to KO Haye in one shot (he wobbled McCall remember!).