Over: Forrest Gump
Under: Cast Away
(likewise for movies starring Tom Hanks)
Movies from 2009
Over: A Serious Man
Under: Where the Wild Things Are
Traditonal Animated Features
Over: Bambi
Under: The Three Caballeros
Live-action/Animation Mixed movies
Over: Space Jam
Under: Osmosis Jones
Penguin movie?
Over: All of them
Under: None of them
Star Wars films?
Over: Episode IV
Under: Episode II
Movies based on cartoons or comic strips
Just to get the game going Iāll answer my own question. 
Over: Alvin and the Chipmunks
Under: Garfield
Movies set in the Marvel Cinematic Universe (Iron Man, the Incredible Hulk)
Over: Spider-Man
Under: Iron Man 2
upcoming movies
Over: The 3D Justin Beiber movie
Under: Cars 2
Movies based off of TV shows or movies that eventually became TV shows.
Over: Star Trek (please donāt throw things at me!)
Under: Arrested Development (even though the movie isnāt out yet. 
)
Johnny Depp movies
Over: Pirates of the Carribean all of them, yah I said it.
Under: A Nightmare on Elm Street What? He was in it for a little while. OK fine. - Finding Neverland (although Edward Scissorhands is pretty underrated; Iām sorry Iām just a big Depp fan).
Terry Gilliam films (as a director)
Over: The Brothers Grimm
Under: The Imaginarium of Doctor Parnassus
Romantic Comedies.
Over: the Notebook
Under: does the Princess and the Frog count? xDD
Disney movies (in general)
Over: THE LION KING
Under: The Princess and the Frog
Documentaries
Over: Supersize Me
Under: Food, Inc.
Movies with talking animals
Over: Alvin and the Chipmunks
Under: A Bugās Life
Movies of 2009
Over: Avatar
Under: Princess and the Frog
Movies with animals
Over: Madagascar
Under: Babe 2 (the first one was OK, but the second one is a forgotten classic)
Hereās a tough one, movies with titles only one word long.
Over: Avatar
Under: Elf
Movies with the word ātheā in the title.
Over - The Godfather part 2
Under - All quite on the Western front
Teenage/high school movies