The problem with SNES is it has to use pre-recorded sound and because of that, it had to limit the sampling rate in order for the audio to fit on the limited space of the cartridge. Sega was ingenious with the implementation of the YM2612, and later YM3438, either one paired with the PSG chip used in the Sega Master System. This allowed music to be generated in real time, and allowed much more depth and clarity in the audio. And allowing both chips to work simultaneously could produce a rather broad range of sounds.
Much of the Sega Genesis was a cool console. Not just that but it's the first console to also have online services, and downloadable content with the Sega Channel, and also the first one that I know of to have a combination handheld/TV console with the Sega Nomad, which was a handheld that could play full console games, and be connected to a television to play at home (like the Switch).
It is no surprise to me that Sega essentially created online gaming in the 90s with the Dreamcast having a built in modem.
Also, those of you talking about triggers on controllers.. it's another Sega innovation first seen on the Saturn 3D controller, which lead to the development of the Dreamcast controller which was the basis of the Duke controller for OG Xbox which was slimmed down into the controller S which the entire modern line of Xbox controllers is based on.
It's too bad the Saturn killed them. They could have done some great things if they were able to stay in the game. Likely, had they, they'd have continued a close relationship with Microsoft and they'd still be filling the niche currently filled by Xbox.
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