You have complete lack of basic knowledge about air combat. Nowhere does
it say that only a 5th gen plane can take down another 5th gen. Look at this -
F-22 Raptor kill markings shown off by german Eurofighter Typhoon
Eurofighter EF-2000 staged
multiple F-22 kills in air exercises. It must
be noted that Typhoon only has a PESA radar (no AESA), while both the Super
Sukhoiand IAF Rafale will have AESA. Raffy has almost all the same capabilities of
Typhoon, while MKI is still better than anyother Chinese flanker, present or
projected.
At the other hand J-20 is
less maneuverable, draggier, and less stealthy than
F-22. J-20 cannot even supercruise, whenever it wants to go supersonic it has to
turn on afterburners which increase its IR signature manifold.
The FGFA shall come in
addition to these aircraft, and however, even when
it comes it'll be a true game-changer,