My old image comparisons from NeoGAF....
Those are the direct texture rips from both the N64 and PS1 versions. The N64 game definitely took a hit here, and there is also less texture variety in zombies too overall. And yeah, those Leon Kennedy leg textures.... But all things considering, the N64 port of RE2 is a miracle in itself, the game really lost very little in the port to the N64. I believe there are a few seconds of FMV missing from the N64 game overall, and doesn't have any of the additional features from the Dual Shock version of RE2. But the game is all there.
RE2 on the N64 was the first Resident Evil game that I played from beginning to end. I remember buying it for $10 from a "previously played" bin from a Hollywood Video rental shop. I actually played the game using nothing but the N64 d-pad too on both Leon and Claire's quests, and I had no problem with it at all. Objectionably it is one of the worst home ports, besides the Game.Com version. But it was fine, otherwise. Angle Studios did such a bang up job with the port. I also cant believe how good the music was too, even if the voice audio did suffer from compression and lower bit rate.