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Thanks for sharing. How reliable are these models and simulations used?
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F-35 vs J-20 vs Su-57 Summary
Introduction Previously, we have done HFSS simulation to evaluate the mean and median radar cross section as well as the radar scattering pattern of the four common stealth fighters namely F-35A, S…basicsaboutaerodynamicsandavionics.wordpress.com
Found this as well in the same site. This shows that the f35 is clearly the stealthiest, followed by the j20 at about 0.21m2 and finally the Su 57 at 0.48m2.
So yes, the J20 is stealthier but not by a massive amount. The stealth 'busting' radar also might give the Felon an advantage in a2a combat.
In conclusion, the Su 57 is still better than anything we have by a distance, even with all the presumed flaws. Also note that it can be integrated with the R37m bvr missile, which is a game changer.


For reference, detection range for DRDO MPR based on the RCS figure in that website, for J35 I assumed the worst case (best for them) RCS that is 1/2 of J20:

F35 - 0.001, J20 - 0.05, SU57 - 0.1, J35 - 0.025
