Bro, you would be bitter too if you were an undefeated champion and the first loss you took was to a guy that had little girl T levels and was hiding under the octagon to avoid getting drug tested. And then when you get your chance to avenge this loss, now with USADA in full gear, he fails his drug test, ruins your massive pay day for UFC 200, and you find out he was using hardcore PED's. And finally, after he serves his suspension and you are set to fight him again, he head kicks you to Bolivia, and then you find out he was taking STEROIDS!
It is really simple: DC is superior to Jones and JONES even knows that. It is not what we think, it is what Jones thinks. If Jones felt he could compete with DC on a level playing field, he would not have taken STEROIDS when there was so much at stake for him. He was willing to get banned for life above simply fighting DC clean.