Research says that any of these movies are too much for any child under the age of 7, they are not able to tell the difference between what is real and what is made up.
How do you know it is too much for your kid? They are struggling with sleeping, they are more upset or have more worries, they start to worry more about things like being killed, hurt, etc. The purpose of the movie is to scare you, create tension, raise your heart rate, make your scream. But once the movie goes off, those feelings should as well. When they don't or they come back, then it is too much for your kid.