It's fair to say that the pro should and cloud be putting up a much better fight than the numbers suggest. One needs to look no further than Horizon. I honestly think pro owners are rightfully upset.
well horizon is a first party game.. but i type this as I'm playing on a pro and the game is stunning. I feel like a lot of the "image quality" complains only rear their head when blowing up the image 1000% for a side by side comparison. Is the x version shaper? yes definitely. Is that sharpness noticeable in actual playing conditions? ymmv but for me, sitting about 1.5 metres from a 55inch tv, the answer is no.
The question isn't whether one is sharper than the other (X is), but rather would you notice if someone sat you down to play either version, and further more, would you notice enough to be completely dissatisfied with your purchase of perhaps the game of the generation?