Part 1 was better. It had a better story.

Having watched Justice League x RWBY: Super Heroes & Huntsmen Part 1, I said to myself, “Why not watch the second part right away? It can't be any worse,” and somehow it managed to be. And it's not necessarily because it's bad, but because the idea of mixing RWBY and the Justice League sounds like the decision of a bored executive, more focused on promoting DC than on creating a good story, and that idea was only good for one movie, and little else. By making a second part, the movie feels like a joke that went on too long, that the little it had to say was already finished in the first part. It's like remembering those old animated series movies from the 90s, which were sold as something important, but which the original series completely ignored. So, other than having background noise while you do something else, I can't think of any other reason to recommend it. By the way, the only thing I like about this movie is Ruby's costume, as her DC superhero version looks great, and I'm surprised that Troy Baker (the same guy who played Joel in The Last of Us game) participated as Batman (the perfect definition of wasting a good actor).

The first one was way better written and have the best interactions between characters, i also like the original designs for Justice league... But hey, this movie is still very good for what it is.