* Beautiful, bright screen
* Auto brightness that doesn't suck
* Face unlock (which is crazy stupid fast)
* Slightly faster FPS with less frequent fail rate. Even though I don't have many issues with my P6P, there's a noticeable difference
* More customizable AOD (I like the "show for new notifications" option)
* I prefer the quick tile layout on the S22U ... Much rather the smaller tiles where I have 6 options on 1st pulldown compared to only 4 huge tiles
* Bixby Routines. I know folks trash Bixby, but Routines is pretty handy (I know there's 3rd party apps where I can accomplish the same things, and likely more, but I'm lazy LOL Having it baked in is just easier)
* S Pen ... Even though I am not a huge user of it, it is nice to have for editing pics, signing documents, marking up screenshots, etc
* Ridiculously fast charging! Using the 30w charger I got when I grabbed the P6P, it charges the S22U incredibly fast. If I'm low I can throw it on the charger for 15-30 minutes or so and it'll top it off plenty
* Better integration with my Galaxy Watch
* Edge panel for having a set of apps quickly open in split view
* The slightly wider form factor makes typing easier for me
* While I do find the camera on the P6P is better, I love all the options and versatility of the Samsung camera. It's really fun to play with some of the features.
* One hand operation + from Good Lock. Love it because I can have navigation buttons and swipe gestures enabled at the same time. Tried some 3rd party apps on my P6P to accomplish this and while they work they pale in comparison
* Built-in double tap to wake and double tap to sleep that works on the lock screen
* The Lock screen music widget
That's about all I can think of ATM