Is rule of law more effective in non-capitalist jurisdictions?

Maybe, but capitalist rule of law makes hypothesis difficult to test.

Rule of law has probably been most influential under capitalist authoritarianism like Nazi Germany.

Maybe? No examples?

If you're going to make an example of capitalism in particular then you should be able to justify it with non-capitalist examples. Are there some socialist or feudal states where the more powerful would lose a case like this?

We understand. He's just talking about how justice should work from a hypothetical perspective.

Hypothetically we all want a justice system to be based on justice but everyone is well aware that the system is at its heart capitalistic.

It's ok to discuss hypotheticals.