So you made the claim, and the burden of proof is on me to disprove it? You know what that sounds like?
We already know the work/rendering is done by the GPU internally in their own code. It's the output that matters. For some reason you singled out SSR by stating "AMD's SSR" is different than "Nvidia's SSR". Which is absurd, as others have noted. That's like saying "AMD's game models" or "AMD's textures" are different than "Nvidia's game models" or "Nvidia's textures" in the same game with the same settings.
You said Nvidia cards were "gimping" SSR on purpose. Or that AMD does it better ("blows it out the water"). So, prove it. The burden of proof is on you, not me.