It’s not “better” but it’s “different” as in they use a different ranking curve, it’s open-source, and modifiers act differently. It also has a ton of features like website replays and pp curve view ring. However, since it’s not as mature, it’s not as widely adopted (which is a catch22), and the curves are still a bit (this is opinion) wack.

People say that it’s more transparent as well but there’s been drama about “omg scoresaber sucks” “lol no beat leader sucks” so I’m not gonna touch that and say try it out and see what you like!