I think you didn't understand my point mate, you were saying that J-31 can match JSF because it was based on stolen data from JSF, so accordingly nations should buy J-31 instead of JSF?... Isn't so?Can you provide me a claim that in vedic times, the Indians had planes thousands of years ago which would travel inter galaxy? Or there were cell phones and cars that existed thousands of years ago? I am not trying to be insulting, but you can use common sense at times too. No federal government agencies will come out and say it, but see the following links below:
Chinese spies 'stole plans for JSF'
China stole plans for a new fighter plane, spy documents have revealed | Global Geopolitics
Defence News - China stole plans for a new fighter plane, spy documents have revealed
what my point is no country would take that claim seriously when they go out for buying a fighter aircraft and I don't why you are hating me on this mate, if you really are an american than you should know that JSF has really costed you guys a lot and chinese propaganda is going to hurt your JSF sales.