thunderchief
Senior Member
When early models are put out, they tend to be basic. They evolve to higher weight, with more powerful engines, and more capabilities. The examples are numerous.
When it comes to specific fighters, you can not merely state a generality and be done with your analysis. One necessarily has to get into the details. JF-17 has plenty going for it. Any comparison that talks about JF-17 vs SU-30 MKI in a one-on-one scenario, is misleading. There are many contingencies that weigh against both fighters, ignoring them would not result in a worth-while analysis.
Every fighter type that continues to be in production and service would naturally be upgraded during that time . I'm certain that JF-17 would get better avionics, engines, new weapons . But so would Su-30 MKI . Both fighters have some limitations stemming from their fuselage size and shape. Those limitations could not be overcomed without creating essentially new aircraft .