I mean "just better" at every use-case? It eliminates the cost of functions where JVM languages cannot due to its limitations. I really don't think I'm treating software like fashion - I'm speaking from years of practical experience here.
The main thing FP on the JVM does better is be permitted by your employer lol. So if we're talking runtime vs runtime, there's no use-case. In general, it's all soft/social reasons.