You should've seen what they had before that. In the first promotional trailer, they had like all those same Heartless in KH2, but with 2 Behemoths added. I would've enjoyed smackin Behemoth around again for old times sakes. The Final Fantasy Fight beforehand was really fun.
KH1 would've given people a run for their money. Facing 1000 Heartless would be a challenge, unless you used Trinity.
But the story was good. Hollow Bastion in peril, The Organization shows up, fighting alongside Final Fantasy characters. The story at that point in the game was really exciting and tense. Everybody was fighting in that part. The whole gang bands together to take out the Heartless.