Hi ! yea you are right china wont be able to match F-22 Raptor in next 15 years but at least they are trying to ( IF J-XX exists ) Some one on this forum said that " China will leave Russia behind in terms of Technology used in most of areas " and I agree with it just look at the the leap advances in space or Aircraft Technology ( its debatable if Chinese are actually trying to copy others more than focusing on research )The likelyhood that the PLAAF will have a fighter in the capabilities of the F-22 by 2020 is unrealistic. Look how long it took to develop the Raptor. Even with China's large man power, they don't have any experience developing an aircraft that complex. I don't doubt they could develop a aircraft that looks like the F-22, and can be as or more manuverable by then. If the aircraft use Russian all aspect thrust vectoring nozzles, the jet could have awesome moves in the air. I think the part China will have problems developing is the advance stealth tecnology and advance avionics. Remember the U.S. has about a 20 year advantage in stealth technology. Also the F-22 is considered by many of the pilots that fly it an Mini-AWACS. The Raptor can pull in / push out so much information it is in a class by itself. China will be able to duplicate some aspects of the F-22 in the next 15 years but not all of them.
I read it J-10 has almost every time over came to Su-27/Su-30/J-11 ( again the source is Wikipedia ) but lets just appreciate J-10 is a success which few people believed China will ever be able to do so.
Rather than saying China will never be able to do that or USA will ever have the supremacy in the air its ridiculous. It has happened in past when superpowers were considered invisible but they collapsed Question is WHEN rather than IF .
I agree with rjmaz1 China does’t need J-XX to be as effective as F-22 for now I don’t see any war b/w USA and China in near future. Never underestimate your opponents either they can or can’t only time will tell but yea J-XX wont match F-22 in 15 years.
Cheers