Sonic 1 vs. Mario World

[Rob2600]

in 1991 mario was stale, and nintendo was tired of him. in fact, it took nearly another 20 years before nintendo would release another console 2d mario game.

I'm not sure where you're getting your "facts" from, but Super Mario World 2: Yoshi's Island was released four years after SMW in North America, not 20.

And if Nintendo thought the Mario series was stale and tired, why did it pour so much effort into Super Mario 64? Your post makes no sense.