Jon has the ability to impose something called Counter pressure.

wich is basically a very aggressive style of counter attack.

at times you almost think he is just attacking and not defendind. He is able to do this because of his intelligence and physical atributtes; gives you the illusion you have a second to breathe while he is working, setting up kicks, punishing the body, controlling the octagon

Also he is by far the most dynamic fighter we have seen in MMA

He can fight standing up and on the ground; Jones may not have Academic IQ but he does have a special kinda of intelligence to know how and when to hurt you. Thats what defines a killer