I'm sorry if this isn't the right thread for it but could you briefly go over the advantages the Su-57 has over the J-20/J-31 that make it more compelling in the 5th gen marketplace?
I do have a reason for my doubts.
I know the Russian jet will have better performance (maneuverability, high speed performance, etc) and will probably have better avionics, but aren't the Chinese airframes better designed by placing more emphasis on RCS reduction? My thoughts were that the Chinese planes would be more stealthy and (likely) much cheaper than Russian counterparts and would thus sell better. Isn't the main selling point of 5th gen fighters to reduce RCS? If raw performance is all that is desired then Su-35/Mig-35 or whatever Chinese counterpart exists would certainly be cheaper to purchase and operate. I know that the Su-57 is supposed to be designed to better combat Western fighters by using a fusion of different radar bands and the like, but is that really a viable strategy for countries purchasing from China/Russia? Most nations would only purchase a handful of these aircraft like they currently do (India excluded because it is frankly an exception). Planes like the J-20 seem to be more focused on long range strikes using stealth and would therefore be more likely to conduct successful strikes on carriers or airbases.
