Wow, this competition isn't even fair. The PC wins due to the fact that it can run games going all the way back to the DOS era, and can emulate every classical system out there, so it's library utterly crushes everything else. Even cutting off to just releases within the generation time, that includes the rise of GOG.com and DOSBOX.

Ignoring the PC then, for the sake of fairness, I have to go with the DS.