With everyone killed by the Indominus, as well as Darius's father, it has a body count at least as high as the first JP. And that's not even taking into account the deaths of Masrani and the ACU team from the film.
Speaking of which, a good example of animation taking advantage of its restrictions was the scene that happens concurrently with the ACU massacre. They obviously can't show a scene like that in a kids cartoon, so instead we see the shelf of all the radios and hear terrified screams, watching the lights go out until no one's left. That's far more effective to me than just showing it.