I think you’re confusing remake with remaster and vice versa. A Remake is a new game built from the up based on the original. A remaster is just a glorified port.

And “a little prettier” is a mild assessment. The game got a graphical overhaul using modern technology, it’s just not as dramatic as say RE2 remake since the original RE2 was a PS1 game from 1998 with fixed camera tank controls and pre-rendered backgrounds