Depends on what version we're talking about. The basic version certainly didn't match AL-31 thrust levels.the surprise of most Indians, the thrust at sea level Ws10 is slightly greater than al 31
No wonder J-15 was still flying on Russian origin engines until recently, despite J-10/11 having moved on to WS-10.
You claim to have reverse engineered the Su-27 into J-11 and MKK into J-16. You couldn't have stopped at just the airframe. You copied the engine too.
Only your copy wasn't as good as the original.
How does the WS-10 MTBF and MTBO compare to AL-31? Any independent sources you can quote?
Any yet you bought less than 2 full squadrons of Su-35s offering broadly similar performance to the dozens of MKK you were already flying and J-16 that was also coming online.China needs to buy the Su-35 to fill the gap before the new generation of fighters enter service
You didn't think Taiwan was going to invade you in that short timeframe, did you?