“Since the original SNES does not have this resolution, the emulator focused into high definition mods bsnes-hd must be used.”
A fan widened Super Mario World from 256 pixels to as many as 384 so it fills a modern TV. It needs a modded emulator, because no real SNES can show it. Nintendo’s idea of preservation is selling you the same ROM again on every new console. The fans keep doing the real work for free.