The Prequels won't be forgotten. There's a whole generation of kids who grew up loving them, and are not fans of the OT as much.
People come down too hard on the prequels, when all of them were generally rated good to excellent. Even the media is guilty of this, when Leslie Stahl interviewed Lucas this year, she said that critic hated the first two prequels, which isn't the case to make such a sweeping generalization! At the time they came out, most media outlets gave "Menace" and "Clones" 3 out of 4 stars.
People don't like the prequels because they're not perfect like the OT, is ridiculous because the OT isn't perfect. I think they're still mad about Jar Jar, whom tons of kids love! (My niece was bummed out that Sith didn't have MORE of Jar Jar!)
The Narnia trailer looked a lot worse than the King Kong trailer.
But yeah, the dinosaurs didn't look any better than those in Jurassic Park, which is already 12 years old.
But Kong himself, dang.
The merpeople in the Goblet of Fire trailer looked a little... weak. The dragon, however, looked totally convincing.
So it's down to either King Kong or HP4 for the third nominee.