My 11 Pro max is noticeably warmer and dimmer than my XS Max. I am pissed! The 11 pro max is more even throughout than the XS Max though. I feel like returning it and keeping the XS Max honestly, as the exchange process can be tedious.
Theres a ton of people with launch day XS Max phones with screens dingier then that. Yet somehow you have a good one. Hmm..
If theres anything I can tell you it's this - each phone each year has a spectrum of color calibrations. If you prefer a whiter calibration, it is possible to get one with enough patience, and enough exchanges.
And now that you know you are picky - never. ever. EVER. buy a launch day phone. Wait for batch 2.