vs. Selected item. iPhone 11 Pro Starting from $270.03. View item. iPhone 8 Plus Starting from $133.43. View item.

Plus if you already have an iPhone 13, The iPhone 13 lineup ranges in screen size from 5.4 inches to 6.7 inches. The iPhone 13 Mini is 5.4 inches, the standard iPhone 13 and Pro models are
The larger camera lenses come with larger sensors and larger apertures. The 13 Pro has a larger f/1.5 aperture on its main camera, which Apple says is 2.2x better in low light than the 12 Pro was.

Apple iPhone 14 Pro Max specs compared to Apple iPhone 8 Plus. Detailed up-do-date specifications shown side by side. Apple iPhone 8 Plus. Review; Specifications; Size: 6.7 inches, 110.2

Of course your are correct in that the total real estate is larger. However , if you hold your iPhone 7 Plus and your iPhone 11 Pro in landscape mode then , for a given text size and graphics size, the contents on the screen will be a size smaller on the iPhone 11 Pro even though more of them fit in that space.
Compare iPhone 8 Plus & iPhone 14 Pro features, battery, storage, camera, and more with up-to-date specs and pricing information. size difference between iPhone 8 mqDu. 13 175 301 384 358 75 26 5 362

iphone 8 plus screen size vs 11 pro