[ProfessorLayton]

Not always, the N64 was more powerful and more expensive (Game carts) than the competition. So was the GameCube (It was more powerful than the PS2).

[mejutoco]

Maybe the cpu was more powerful (honestly idk) but the low memory of the N64 limited the textures and video features (never saw any video in an N64 game) in the games (see how flat texture-wise the textures of Mario64 are).