At most, the appearance of the aircraft only has a great impact on the maneuverability and stealth of the aircraft. Also affecting its performance are fire control, radar, navigation, flight control, weapons and other systems.

The F-117 has a very avant-garde appearance, which can be said to be unprecedented and unprecedented. However, this appearance greatly affects its maneuverability and control capabilities, so it is now retired. The A-12 is more avant-garde, but it is so expensive that even the United States cannot afford to equip it.

The reason that gives you the illusion that "a fighter plane with an avant-garde appearance is a good fighter plane" is that good planes are blown out of wind tunnels, and countries with a large number of wind tunnels, such as the United States and the former Soviet Union , have invested a lot of money in the development of fighter jets and equipped their fighter jets with good systems. If the Russian radar from thirty years later can be installed on the MiG-29, it will still be able to defeat the beautiful-looking F22 that uses the current system configuration.