Figured this was deserving of its own thread:
https://www.engadget.com/2016/10/20/ps4-pro-mark-cerny-interview-hardware/
Near the end of the meeting, Cerny pulled up Knack, his PS4 launch title, side by side on two HDTVs. One game was running on a PS4 Pro and the other on a standard PS4. The differences were obvious: The PS4 Pro resolved cleaner lines and animations while the standard PS4 scene had more noise, particularly in detailed areas and backgrounds.
Cerny started with the Pro, picking up the controller and saying, "So if we look at the scene, again, it's very clean, smooth. But if I were to do this on -- " he switched to the PS4 TV and sighed. "Look at all the moiré, or all of the shimmery noise in the distance. And this is what we see when we play games on an HDTV and we've learned to ignore it."
https://www.engadget.com/2016/10/20/ps4-pro-mark-cerny-interview-hardware/