To follow what I said previously here . This topic follows what I said about Usefulness of BVR combat, Value of stealth aircraft, and finally Airborne IRST properties and performance. To agree or not with my assertions, please read all the three links before, because they contain all my arguments .
In a simple cheap asymmetric measures, and not costly Russian air force is able to easily nullify what the costly F-22, and F-35 bring : the stealth technology, beside BVR. In order to do that, russian air force needs only less than 3,2 billion USD to equip all its air fleet with powerfully IRST like OLS-50. For that reason since the beginning I was convinced that the Stealth fighters was aimed to terrify only backwards countries. Hence, the F-22, as F-35 were never done against russsian air force, because russian air force could easily neutralize US stealth. For that reason, untill now, US, contrary to what assert western propaganda, still rely on their fourth generation fighter like F-15, F-16, F-18. For that reason, I still consider the Mig-21-93 capable to win against F-35, and even the F-22. Obviously if this fighter has inside, a good pilot, Russia does not lack of good pilots, and a good upgrade of its avionic, even by excluding its cumbersome radar.