However, with a non-Pro Xiaomi 13 also available at £849, with a smaller display and dialling-down on the cameras' resolution (and main sensor's size), I think that's a real savvy proposition ...

Reports claimed that the iPhone 14 and iPhone 14 Pro would have the same 6.1-inch display. The Max models will feature 6.7-inch screens. iPhone 13 size compared to iPhone 12 and iPhone 11.