Too bad Nintendo was an ass and basically forced producers to work only on their line of game consoles. NEC got the short end of the stick except for Japan where they launched before everyone else.
Also I feel that TTi would last way longer on US if they managed to do a DUO unit with SUPERGrafx capabilities. I don't doubt that they could at least get close to outsell the Genesis, specially with all the new developers they (briefly) attracted with the new Super CDROM2 addon. (EA, Lucas Arts, Maxis, Spectrum Holobyte, Psygnosis, and others...)
And a Namco SuperGrafx 16 DUO with Arcade CDROM would be neat to see hehe.