Python is laughable. One word; GIL. Nuf said.
Java, and so Java EE is considerably faster than Python, each and every benchmark out there proves this. Often it's up to a hundred times faster.
Java has a much richer ecosystem than Python and even more so than Ruby. Java projects are also much easier to maintain and much easier to scale.
Enough backing? It's just the start of why Java EE is the better tool ;)