In 1997 we got further from the Super Nintendo being released in North America than the Super Nintendo being released in North America was from the NES release in North America. These events were 6 years apart.

Super Nintendo Entertainment System (SNES) released in North America

No more hard angles on these controllers. And six action buttons!

Nintendo Entertainment System (NES) released in North America

The NES ran at 60FPS… unless you had a bunch of sprites on the screen.