Your post makes no sense at all. You expect MS to have a console for the same price as Sony but with -2 TFlops of power? If it's the same price range you can bet both consoles will be within 0.5 Tflops of each other. At 8.5Tflops I'd expect MS to price it at 399$ and PS5 at 499$ if it was above 10 going by your suggestion.
MS will have a stronger CPU (sram + more clock), more secret sauces (VRS), and cloud related silicon. Those don't come free.
Balance doesn't come cheap.