The issue here is textures though, not resolution, so whether a screen is 480p or 1080p doesn't matter for the purposes of this discussion.
Prime's textures are not low resolution by the standards of its time and hardware.
It certainly is unfair to use images from an emulator and you should always use images from real hardware. Clearly we will have to agree to differ. Others can judge if they believe Metroid Prime offers realistic and detailed texturing for its day I certainly don't believe it did. Still liked it visually though.