The 12 has the screen size of the 11 and the body size of the 11 pro. Seems like this generation, apple intentionally made the non pro better than what the 11
How iOS Apps Adapt to the various iPhone 12 Screen Sizes | by Geoff Hackworth | Medium
Display Resolution on iPhone 12 is 2k or less? How about Pro Max? TIA : r/ iPhone12
Apple iPhone 11 vs iPhone 12 | Which should you buy | Radio Times