Just spent 1 hour in the apple store comparing them, and this is my take on max brightness with auto brightness off and True Tone off the 13 pro max was much darker than mine and the staff’s iPhone 12 Pro, they said 1200nits it’s a lie we compared a few and they are all darker in the apple store, they said outside it’s brighter but on max brightness it should be brighter not darker, also the notch is horrible it’s worse you notice the taller notch and even the apple staff said after I said it he noticed it to, I don’t understand how the new phones that are spose to be brighter are darker and also the whites feel flat he said my 12 pro max looked brighter and the whites popped more