The key thing is Performance Enhancing
the posted the pics of Jon with muscle on, not even realizing those pics are before he fought OSP, and he didn't come in that big against him, also he was suppose to fight DC and OSP was last minute, and he didn't test positive then.
When Anderson Silva fought Nick Diaz you could look at his arms and see the difference, he didnt even look like that at 205
it's obvious who's on roids you can tell by their performances.
Hendrick all of a sudden is a completely different fighter, not even remotely close to the physique he had against GSP
something obviously is different, he stopped using.
Rory Mcdonald, lack of aggression, lack of explosion in his movements, completely different fighter, all of a sudden. Obviously stopped using.
Jon Jones physically looked the same he always has against OSP, fought exactly the same. same power, same speed, same everything.
the last person he finished was chael sonnen, so him not finishing OSP is due to his approach to the fight.
If Jon Jones was on steroids, who would be devastating these dudes, break orbital bones, knocking people out, he already his more athletic than his competition so he would seriously hurting people.
Now if Jon Jones was knocking people out, and then all of sudden looked like he did against OSP, you would see a difference in his performance maybe he stopped using because of USADA.
or if knocked OSP in a devastating fashion with a single blow, that would be a departure from what we've seen of his capabilities, and there would be evidence he has enchanced his performance. Or he could've just improved his punching technique, you would still need proof like a positive test to make the connection.