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I said that the F-35 is ahead in sensor fusion, not that the Su-57 did not have it. The aerodynamic performance is definitely worse than the Su-57, no doubt about it but aerodynamics is not the most important parameter of a 5th gen fighter, I would argue that is the least important. In the most important parameter, stealth, The F-35 is way superior to the Su-57.


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The Su-57 is designed to work inside the Russian IADS system as part of it. It is meant to be cued by the Konteiner, Voronezh, and Rezonans radars. With the cueing it will be able to focus its own AESA radars on specific targets largely negating their stealth. The extra agility and speed it has are supposed to help it evade long range missile attacks.