Atari won! Jag 4 life, beetches!
Seriously, in terms of hype, Sony won, though Nintendo was close. With one number Sony gave Sega a good kick.in the junk.
In terms of games, Squaresoft followed by Nintendo.
Looking at the list of exhibitors makes me feel old. Atari and Acclaim were prominent, Activision and Ubisoft were nowhere to be seen. Crystal Dynamics was its own company instead of an Eidos/Square Enix subsidiary. EA... still sucked.