Well, Java is slower than almost anything in Regexes (and apparently buggy), according to this post: attractivechaos.github.io/plb/ Lua clocks in very good time, and Javascript (interpreted, with a JIT compiler) is faster than C# (compiled to bytecode).
This is only a particular case, dealing with regexes. In general, you can't make a sweeping statement on general performance. Your mileage might vary depending on the actual application you are running, and the actual implementation you use (different compilers will have different performance, for instance).
All that being said, the performance difference isn't really affecting the business cuz most companies, banks, and organizations are happy with Java & C#.
So, I really think it's pointless to make a decision out of these metrics.
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Well, Java is slower than almost anything in Regexes (and apparently buggy), according to this post: attractivechaos.github.io/plb/ Lua clocks in very good time, and Javascript (interpreted, with a JIT compiler) is faster than C# (compiled to bytecode).
This is only a particular case, dealing with regexes. In general, you can't make a sweeping statement on general performance. Your mileage might vary depending on the actual application you are running, and the actual implementation you use (different compilers will have different performance, for instance).
I agree on what you say.
All that being said, the performance difference isn't really affecting the business cuz most companies, banks, and organizations are happy with Java & C#.
So, I really think it's pointless to make a decision out of these metrics.