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As someone who was actually around during the time, Street Fighter II was THE killer app for the SNES. SF2 was the COD or Destiny or whatever for its day and it being only the SNES in 1992 was huuuuuuuuge.
When it came out the console wars started to tilt in Nintendo's favor again, but then the mistake of censoring Mortal Kombat in '93 scuttled Nintendo's momentum until in '94 they came back with uncensored MK2 + Donkey Kong Country and they finally KO-ed the Genesis.
Back in those days you played as much third party content if not moreso than Nintendo games on Nintendo consoles.
I played a ton of Megaman, Contra, Super C, Ninja Turtles, Blade of Steel, Metal Gear, Wizards & Warriors, Ninja Gaiden, Double Dragon II, Duck Tales on my NES, all these games were hit games many of these games outsold many Nintendo IP.
On SNES, Street Fighter II, Final Fantasy III (VI), NHL '94, Top Gear, Chrono Trigger, Mortal Kombat 2, NBA Live, Megaman X, Super Star Wars, NBA Jam, Contra III, etc.
The NES/SNES were the PS4 of their day.
