I remember MS saying that scarlet would be 4x more powerful than one X. But I dont have idea what it means, seems that is not in Tflops.
Also, I remember Xbox launching with 1.3Tflops, and PS4 with 1.84, and they were almost the same visually. Better frame rate in one, better resolution in other, but they were par. Seems that 8 to 12 Tflops would be the same situation. 4 Tflops (a PS4 pro) of difference and the machines would still be on par.