You do know they also fought at UFC 182, right? Where Jones passed his random blood tests with low/normal testosterone levels AND additional carbon isotope testing that definitively proved he wasn't taking exogenous testosterone for that fight?
Jon's also beaten him at a press conference brawl for UFC 178, where while the fight was eventually cancelled as Jon got injured, he never failed any tests leading up to that either.
You can't sit here and say you don't know what would happen if Jones were "clean" as we have that twice already.
And before you go ahead and throw out the validity of those earlier tests, I'd caution against opening that can of worms seeing as DC's own tests for UFC 182 had him sitting at 16-23x the normal levels of testosterone for a human male AND unlike Jones he never had the additional carbon isotope testing done on them. Which, had he somehow passed given his superhuman levels, would've made him a medical marvel with the highest natural levels of testosterone in all of human history. And he still lost in spite of that.
Jon's just the better fighter. It's literally how he tricked DC into leaning into a headkick.