I suspect that for every game whose soundtrack was lovingly hand-crafted to take advantage of the SNES's unique abilities, you'll find 10 more that someone composed separately on a hardware DAW of the era and then someone else came along and tried to fit it into as a few bytes of ROM as possible.

Besides, there is no reason a remaster can't also add compression and other SNES effects in order to stay truer to the spirit of the original.