Well... You are underestimating the power of sweet spot :-) In a tight computation kernel it's actually possible for JavaScript or any other JIT compiled langua

Well... You are underestimating the power of sweet spot :-) In a tight computation kernel it's actually possible for JavaScript or any other JIT compiled language given a good JIT to match the performance of C. Also mr. C and his boss came into existence for a very particular purpose and that purpose is not "JavaScript vs. C" but rather "Normal JavaScript vs. inhuman JavaScript" comparison.