This discussion is dumb. Just because the WS-10 is in mass production does not mean the J-20 is using it right now. We still don't know the identity of the engine, but what little physical evidence we can find seems to put us closer to an Al-31 derivative than a taihang derivative. Of course people can believe whatever they want until there is actual confirmation on either one.
In any case the current discussion is quickly spiraling outside the relevant scope of the original contention. It's unfortunate that something as mundane as the identity of a stopgap/makeshift test engine can be hijacked for nationalistic ego-tripping. Real national pride should not need a reality-distortion field to back it up (what does it matter that the J-20 is using a WS-10 or an AL-31 when it's going to be using neither in its final configuration), so why don't we stick to what conclusions we can derive from actual evidence and not jump the gun when there's not enough evidence for confirmation?
Anyways, has anyone noticed that documented flight testing has slowed to about 1 a week?
