it and the Playstation were clearly comparable
No, it wasn't. Actually, the Playstation games were more comparable to the late era SNES games such as Killer Instinct, DKC, Super Mario RPG, etc. N64 games at times came close to the level of the Dreamcast (a 128bit system).
The Wii was more like Nintendo releasing a slighty beefed up SNES to compete with the Playstation and then had to jump right to the Gamecube to catch up.
I assume you meant to say N64 and not the Wii. But that's very wrong. If anything, the Playstation was a glorified SNES. The only remarkable improvement the Playstation offered over the SNES was the CD based media. It is no coincidence that the PS1 and its controllers are similar in design to the SNES because the PS1 is actually based on the SNES CD-ROM addon which Sony worked on but Nintendo ultimately pulled the plug on. So the fact of the matter is the PS1 was nothing more than an SNES and a CD-ROM drive fused together.
The PS1 may have been a more powerful system, but the leap from the late era SNES games to PS1 is miniscule and very much comparable to the leap from the GC to the Wii. Many late era SNES games actually looked better than the majority of PS1 games. So yeah, the CD drive was the only remarkable improvement there.