These exact emulations are important for speedrunning and other high-performance playthoughs. I know that several games (and I think Super Mario is among them)

These exact emulations are important for speedrunning and other high-performance playthoughs. I know that several games (and I think Super Mario is among them) that don't accept Emulator speedruns as records because emulation errors make glitches that aren't possible on console are on emu and vice versa.