I'm a person who hasn't seen the movies or read the books and doesn't really know anything about them, except that the vampires sparkle and play baseball. I did see a preview for this movie, though, and it really seems like they battle at the end! They were fighting, at least. So maybe that's how they make the ending more exciting: the negotiations fail, and then Robert Pattinson's character jump-smashes the ground.
i haven't seen/read these either, but i'm going to go out on a limb and say that i'm pretty sure that watching the surrounding air suck out the blood from a bloody pile of stool on a park bench would be more interesting and less likely to make me gag.