your daily dose of entertainment.
The current JF-17 only has a max speed of mach 1.6 and a ferry range of 3,500km. I doubt the JF-17 will ever see those big of improvements unless it gets a drastic redesign and far better engines which it won’t.
There is no Chinese missiles capable of 300km and the JF-17 radar wouldn’t be able to take advantage of such a long range missile anyways. The Rafale has the Scalp cruise missile. Pakistan also tried to get French avionics for the JF-17 so the aircraft is lacking.
The Rafale is not “fixed technology”, it has already been upgraded many times and the Indian version is getting some unique avionics and software upgrades.
The cheaper the aircraft, the less sophisticated and crude it would be. It’s like thinking you can match the performance of a Ferrari 450 with a cheap Ford escort which is never happening because the Ferrari has technology that is 50 years ahead of anything in a cheap Ford.