“These aircraft are qualitatively inferior to our F22 and F35 but they represent a quantum leap in Russian capabilities.”
LOL. Inferior in what capacity? F35 is inferior to the 3gen fighters on most specs.
It is not as maneuverable as the F22 but it will hold its own against most everything else out there in a close in visual engagement. Configured for air to air at comparable fuel state to an F16 it can do some amazing things
In a real world engagement against 4th gen aircraft its like clubbing baby seals