You're a complete and utter moron. Jon Jones would have never beaten DC if he had never used steroids. In fact, I'd argue that Jon wouldn't have ever been a UFC champion if he didn't use steroids. They gave him that strength to dominate wrestling positions that he wouldn't have without PEDs.
There's no way a fighter that can't finish Andre Gusmao or Stephen Bonnar (his 1st 2 UFC fights) can go on an 8 fight finish run & win the UFC championship + defend it 2x [I'm counting his fight against Matt Hammil as a finish, although it's a loss on his record].
After his Jan 2009 fight against Stephen Bonnar, Jon Jones started doping. His performances after that fight clearly show a massive improvement in his physicality. He's a PED disgrace, and he should never fight again in the UFC.