Errr it's not??

Screen estate wise the 8 plus is still larger.

simple maths width x height.

The diagonal measure doesn't do justice, just a marketing gimmick. If this is the holy grail of screen size measurement, my 15 cm ruler beats all screens flat. that must be what, 10inch at least?

U just literally took everything I have explained, threw it to the bin, and insisted on your own logic.

Bro. Diagonal measurements don't justify shit.

It is only applicable for comparison, when the ratio is equal.

In this case 18:9 vs 16:9.

U don't judge one's weight based on his height right? Same theory.