He was a super talent, although I think his talents were steadily declining in the last few years of his career as he became more of a brawler with his BRUTAL two handed power. At one point he was a great boxer-puncher, he had the skill but fell a bit too in love with his power IMO.
But god damn, what a waste. Before the motorcycle accident derailed him, he was famous for coming into gyms and just destroying their best guys with ease. You have to wonder if CTE played a factor in his eventual blow-up, as the motorcycle accident was very severe and of course compounded with all the blows he took in sparring and fighting.
It's a real shame, he robbed the boxing world of an incredibly exciting, once in a lifetime puncher.