Don’t think so. Although they use lots of Russian platforms but with their own AESA Radar, EWS, Sensor package, longer range and more advanced BVRAAM with AESA seeker etc. Only Su57 can be said to be better than what the Chinese have been using since almost a decade.
A Russian source:
Fighter Rafale disabled the radar of the Russian Su-35The radar of the Russian Su-35 was disabled by a powerful electronic warfare system.
The invulnerability of the Russian Su-35 fighter was called into question after it became known that in a training battle, the Egyptian Air Force Rafale fighter, as a result of the use of an electronic suppression complex, was able to disable the radar station of the Russian combat aircraft, in fact, blinding it. As a result, the training battle was lost by the Su-35 fighter.
“During the training battles, the Su-35 tried to attack the Rafale, playing the role of the“ aggressor ”. With the help of the Thales Spectra system of protection and prevention of enemy fire control (electronic warfare equipment - electronic warfare), the French fighter still managed to drown out the phased antenna array (PAR) of the Su-35 radar. After disabling it, the Russian fighter was unable to aim the weapon at the enemy and was easily knocked out by Rafal , ”the Moskovsky Komsomolets newspaper reports.
A little earlier, the news agency Avia.pro reported that, as part of a training battle, the Russian Su-35 fighter lost to the French Rafale fighter, although it was in the attack, which caused a number of doubts about the effectiveness of this combat aircraft.
Exactly how many series of training battles were fought between the Su-35 and Rafale fighters is still unknown.
Подробнее на: Российский Су-35 впервые проиграл в учебном бою французскому истребителю Rafale
Is it a message for China?