Let's not even get started on the whole J-10B/FC-20 drama. It's far better to competitively evaluate + select an aircraft, and then see it through to the final stages of the deal, than to make claptrap about an imaginary purchase, and then drop it entirely altogether.
In the time the other side managed to work on 1 project and build some 50 planes (some of them came from China actually), we initiated 4-5 jet fighter projects, and built over 200 Sukhois in India (just 1 type), more to come. And that's not even including the other projects that are yet to materialize.
Those ~50 JF-17s licensed production are the only fighter planes ever built in Pakistan. But since 1950s, India has built nearly 1,000+ fighter airframes of various types. There is no comparison.