PS2, as well. But games and game hardware tend to have very different CPU requirements than general purpose workstations.

The N64/PS1/PS2 (and others) weren’t exceptional for very long, if ever, in terms of CPU power. They relied on dedicated graphics hardware, low price, ease—of-use, a business model that allowed for selling the base hardware at a loss, and devs optimizing for a fixed platform to stay competitive for 5-10 years as PC hardware improved.