Cross posting form another forum. It is posted by johnq.
Much of what you are saying comes directly from CCP propaganda talking points in their psy ops warfare, so ahem, not very reliable. The J-20 is a paper dlagon with its own issues including being underpowered by weak (for its weight) unreliable 3rd generation engines (copied from Russian engines, but even more unreliable than them) which only last 80 hours before needing overhaul, a radar whose back end programming is still limited mostly to PESA level technology from the 1990s (due to export restrictions on China by both west and Russia), optronics which are also still based off of Russian 1990's level technology (and quite inferior to what is available in the west in terms of range and reliability), and weapons whose seekers are also obsolete in terms of programming, and hence can be jammed. CCP military has its strengths and weaknesses, and while they may be able to show fancy T/R modules in the front end of its radars, it is still lagging in the actual programming of these radars, including weapons radars. Otherwise, why did the CCP military buy SU-35s and S-400, if not to copy their programming? If the CCP military radar technology is as advanced as they claim, there would be no need to purchase SU-35 and the S-400, which have Russian radar technology from 2 decades ago. So please, stop reciting data points from a CCP military propaganda handbook. The Indian military is well aware of CCP military's strengths and weaknesses, and they are not stupid: They know that the Rafale's avionics and sensors are ahead of what is available to the CCP military, and the Rafale is way better in terms of load capacity, engine reliability, and operating from high altitude airfields, while J-20 fails in these regards. As far as J-20s overhyped RCS reduction, the CCP military has still not figured out a foolproof way to hide the radar/radome from being tracked by modern wideband radars even in x band, so there goes your RCS out the window. And there are serious design deficiencies with regards to RCS reduction in the J-20, including canards and their joints which are radar resonance hotspots, among others. The Americans are not stupid for avoiding the canards altogether because they are the leaders in RCS reduction, and well aware of what works and what doesn't. It is also not a trivial thing to create lasting RAM paint which is reliable throughout the flight envelope of a supersonic jet: The Americans have struggled with this for several decades, and the CCP military is several decades behind the Americans.
Much of J-20 is hype without evidence, as part of CCP military's propaganda parade for their psy ops.
Rafale, on the other hand, has proven itself time and again in terms of reliability of its sensors, weapons and engine reliability.