What the hell are you talking about the B-2 ?
There were 60 B-2 sorties over Yugoslavia. Look at the image above. One F-117, call sign Vega-31, was shot down in March 1999. The Obvra airfield was bombed in April 1999. So how can you say that the US withdrew the F-117 and barred the B-2 from Serbia ? Do you perform any basic research about the subject under debate ?
So what ? That does not mean they would be successful.
Clues for you, kid.
Before NATO began, Serbia sent a four-man team to Baghdad to seek out Iraqi experience against US air tactics. Serbian air defense took Iraqi advice and trained to become more disciplined than Iraqi air defense soldiers. Terrain played into Serbian air defense as well. The relatively flat terrain in the ME made bombings easier than the hilly terrain of Eastern Europe, which influence combat altitude, as in higher.
What all this mean is that despite Iraqi advice and Iraqi influenced training, and favorable terrain, it was really remarkable that NATO lost only two fighters out of over 30,000 combat sorties. Further, fighters were under much more restrictive combat rules of engagement (ROE), even down to which air routes they must fly.
Two losses out of 30,000 combat sorties under higher altitudes, SAMs, and unfavorable terrain. Your PLAAF generals can only dream their pilots could be that good.