SpArK
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The state-run daily then cited areas in which it says the Chinese fighter is ahead of the Russian jet.
First, J-15 has an avionics more advanced than Su-33. Su-33 is equipped with old-fashioned ARINC429 discrete avionics system of one-way low-speed data bus, while J-15 adopts joint avionics system of bidirectional data bus.
TS-100, the Su-33′s fire-control computer, has a computing speed of only 170,000 times per second, while the J-15′s fire-control computer has an estimated computing speed of over several million times per second, said the media report.
The J-15 owns a much more advanced radar system than the Su-33. Due to its backward avionics system, the Su-33 can only serve as interceptors, and is incapable of air-to-ground precision strike.
The J-15 adopts improved materials and production techniques, and thus has greater strength and lighter weight.
Finally, the J-15 is powered by Taihang (WS-10) turbofan engine, which is more powerful than the Su-33′s engine.
In 2010 , Su-33 was upgraded with latest avionics, more powerful (132 kN, 29,800 lbf) AL-31-F-M1 engines and a larger weapons carriage.The new production batch would include a phased-array radar, thrust-vectoring nozzles, and long-range anti-ship missiles.
Sukhoi begins flight trials of modernized Su-33 fighters | INTERNATIONAL AVIATION NEWS
Russia's Sukhoi begins Su-33 Flanker-D trials | Defense | RIA Novosti
I guess the china daily might have cross refereed wikipedia or might have asked Sinochallenger guy " hey sino which is better china or Russia"........... sino might have replied " LOL at Russia" ... then the daily concluded chinese was better.