[n0body]

Different. Not better. Each has their strengths and weaknesses. Mojo has websockets, catalyst has excellent backwards compatibility, proven scalability and works well with large teams of developers. Although catalyst has more dependencies, but that comes with the featureset.

As for quick prototyping, they're both good for that once you know how to use them, and they both have excellent docs, although catalyst has been around for longer and has more deployments and realworld examples, which is always good.

Overall though, they're both constantly being improved, and competition is healthy, and it all depends in what you want, websockets, extra rapid prototyping and no deps, or reliability, support, large feature set, excellent scalability and a proven track record both in production and during development ;)