These two and Humpty Dumpty were imo the worst ones. They looked way to catoony for the dark tone and animation.
Maybe because Flashpoint had a consistent tone (I haven't seen it so I cant compare)?
"Under the Red Hood" is for example also quite violent, but it fits the tone of the movie.
"Batman and Son" on the other hand always feels for me like they couldn't decide if they wanted to make a movie for small kids or something for adults.