Does a 5'10" 170lbs version of Jon Jones beat GSP? Highly, highly doubtful in my opinion. Is all the flashy shit going to work against a diligent athlete focused on fundamentals with a solid fight IQ?
I think a Khabib-sized version of Jon Jones struggles with Khabib too. A Chael-Sonnen sized version of GSP would have finished Silva. You would have to be utterly naive to ignore that a huge part of Jones' success came via his phyiscal attributes over his opponents.
People mock GSP all the time for his chin because of Serra. The only thing I really take away from that is most of those posters have never been smoked behind the ear hard. The kick that he ate from Condit was solid, and Hendricks beat him up pretty good. So is GSP's chin good, or is Hendricks pillow-fisted like Jones? Getting your bell rung only a few times over a career, doesn't prove that GSP can't take a shot, it means he can.
Serra caught him and capitalized. It happens. GSP brutalized him in the rematch. Again, and in my opinion, a Fedor-sized version of GSP is a nightmare matchup for Fedor.