That he's an exciting fighter to watch? I can't think of a single boring fight that he's been in. He's easily one of the most exciting champs and MMA fighters in general. The vast majority of his fights are pure domination but he's also had wars (Gus) and a close encounter with a loss (Vitor). There's never really a dull moment in a Jon Jones fight unless you are a butt hurt fan of a fighter that he brutalized/is brutalizing.