Honestly after using it a couple days I can't tell much difference between the 23 Ultra and my Note 20 Ultra. Physically they are almost identical, especially in a case. I decided to install all of my apps and pictures on the new phone from scratch, rather than copying from the old phone. It took hours, downloading and guessing logins and passwords. I put all of the pictures from the Note on my computer, intending to go through and delete the duplicates or bad images. After only going through 500 of about 22,000 pictures I quit lol. I set the S23 to 120hz at the highest resolution, everything else is pretty much set as my old phone for settings. So far I can't say the camera blows the old phone away. I can't honestly tell much difference on the phones themselves or my crappy 1080p work monitor. On my home 34" I can start to see some improvement, although I did not take any side by side comparison images.
That's not to say I don't like the S23 Ultra, except for being a tad bit heavier, and having a slightly smaller display, so far it seems excellent, except for low light photos where it still struggles. The 10x zoom also doesn't wow me. I guess the bottom line is that I have to start going though and deleting photos that didn't turn out right away now, instead of letting them pile up n my limited storage.