probably yes
genuine talent and fight iq is there, ped's wont change that
they will allow him to train harder, longer, recover faster and otherwise improve his skills at a faster pace.
Thing is, Jon was so insanely ahead of the pack at all points of his career. He was partying, doing coke during fight camp and presumably fighting at a fraction of his full potential for many of his fights and still dominated. Not to mention he is naturally insanely physically gifted for the division.
I think without a doubt he still would've been champ
also worth acknowledging that most fighters are on the juice. Most