But the huge difference is also the screen size (so not just the body) and you are not struggling as much while using the 6+ (6s+, 7+, 8+) than while using the 11 Pro Max or even worse the 12 Pro Max when trying to reach the top or the bottom of the screen (5.5" vs 6.5 (11PM) or 6.7 (12PM).
I am a photography enthusiast and I was really really tempted to order the 12 PM and still find it really great but I am not sure that the extra battery, the new camera stabilization and the bigger sensor will compensate/balance for the struggle that carrying or manipulating a huge phone will be every day.
I agree that the iPhone 12 Pro is priced just $100 less and cut on some 12PM camera features but it is sill a great photo-phone and so much easy to use/put in your pocket.