JF17 has provided China with a base line fighter from which it can build a more modern fighter aircraft, wether China buys it or not doesnt matter China has learnt alot from JF17 which it can inco-operate into J10
when JF17 was launched right from the start its designed was based around the requirments of a fighter pilot and not from a military company, its basic design layout is derived from decades of actual wartime experience from PAF pilots and Chinese designers, fighter pilots actually had a say in the development of the JF17
when it comes to WVR combat no airforce in the world has come out on top of PAF pilots, its drilled into cadet school from day one, again and again they practice WVR its cornerstones of all PAF doctrine going back decades, during excerses PAF pilots have scored on F15 Eagles and RAF Typhoons in Turkish war games, they live and breath dogfights , PAF flying hours exceed 200 and even 240 hours
this works for Pakistan because they dont have a big airspace they cant re-treat same is not true for China, so both requiments are different Jf17 for Pakistan and J10 for China