A short book
A long movie
movies take longer.
A short book holds for more intellectual capacity to think, derive and interpret. Everyone reads a book differently, whereas a movie is created based on the perception of a few individuals on how it should be like. Most movies are targeted at a broad based audience with a profit-maximizing motive, and thus only favors a certain formula.
Against a short book? Yes. But when they are both long books/movies, it depends on the story.