Upgraded Chinese Stealth Jet "Overwhelmingly Superior" To US F-35 Jet: Claims Beijing Analyst As Lockheed Martin plans to deliver the next batch of F-35A stealth fighter jets to South Korea in March, Chinese military observers have stated that an upgraded Chinese J-20 stealth fighter will achieve “overwhelming superiority” over the F-35 in the future and that the People’s Liberation Army Air Force (PLAF) …