Let me settle this for y'all.
Jon took PEDs because he's a psycho. When
@Cooliox said, "You cheat, you lose regardless of the outcome", is how others rationalize ethics. The difference between right and wrong. Jon doesn't see it that way. To Jon, if you lose, you lose.
Wanna know how you can tell? Because Jon never felt bad for doing it. He only felt bad because he got caught. That is one of the characteristics of a psychopath. (There's different types of psychopathy as well as degrees of it.)
Right/wrong... it doesn't matter. When you don't feel guilt, you're doing because of a lack of ethics, not necessarily because of a mental weakness. If you can still prosper and not feel bad about it, then it's lack of ethics, not mental weakness. Trust me, I've done a lot of research on the subject, particularly in business.