For the first competition, as is clearly told in the event booklet (check your copy od Donkey Kong's one too, since it's the same), they have used:
NBA Jam
Sonic 3
Clay Fighter
The final round has been held in Fort Lauderdale.
Winners:
SNES-Mark Guinane
Genesis-Fred Dughty
Between the prizes, they have been "digitalized" to be put in the Sega CD game Super Strike Trilogy (unreleased?).