That Guy
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well, WS is not matured enough , even Chinese don't use them , or else you have WS engine in your JF plane. any engine which lasted only for an hours is not certified military engine.
That's not totally true. The Chinese are using the WS engines, but in a limited batch and only for testing purposes. There have been attempts to replace foreign engines with domestic ones, but they've failed because of poor quality control and poor manufacturing practices. This is not to mention that while the WS engines are indeed more powerful than their Russian counterparts, they tend to have a lower lifespan and higher maintenance cost.