Benchmarks are merciless
JavaScript vs. PythonPHP vs. Python A number 1/4 for A vs. B means that B is 4 times slower than A. The Computer Language Benchmarks Game is more a community benchmark than a programming language benchmark. You get some ballpark figures that confirm what you already know beforehand: C++ is faster than Ruby :-) But it's still depressing to see that a current implementation of JavaScript is faster than Python.