Increasingly Promising, Russia's Su-75 Nears Completion, Its Capabilities Surpass Su-57 Fighter Jet

Su 75 is in direct competition with the same company's Su 57.

They'd be better off sticking with the Su 57.

"F-35 battle tested platform"
LOL

Stealth coating will ensure RCS can be minimised
Unfortunately it can't fly during rainy season like F35