I think it's unanimous that no fighter in his weight class or Anderson Silva could better Jon Jones - the guy is unstoppable. Hypothetically, let's assume Jon Jones fights at 230lbs, against Cain Velasquez (240ish), who would win? Jon Jones would have a considerable height & reach advantage, with Cormier adopting a similar fighting style and frame to Cain. Cain is clearly stronger than DC but it's not that significant, I personally think Jones would also beat Velasquez. .....are there any other heavyweights which could defeat/cause problems for JJ? ...Werdum? Browne? Hunt? (unlikely) One More Thing: Cocaine is likely to reduce the length of his career, and many fighters continue fighting well past their peak, will Jon Jones do this? If so, how old do you think he will be before he starts losing?