People will argue that Cormier has a different style and different qualities than most HWs, but I actually think that Cormier is a more difficult style than the majority of the HW division for Jon Jones. JDS (who is still a very big threat because of his punching ability and TDD), Werdum, Browne, Barnett and Miocic all play into Jones' strengths more than Cormier in my view. Velasquez and maybe Overeem (Overeem is a huge wildcard in the division and is really tough to gauge) are the two fighters that pose greater challenges than Cormier (Velasquez has much the same pressure style but a more proven gas tank and Overeem is very physically strong and dominant in the clinch which makes him very dangerous early). I think Jones would be very successful at HW, but I would clearly favour Cain over him.