You're right about one thing. That is very unscientific. You're mainly testing your file system cache, not these programming language implementations.
E.g. perl(1) is faster than ruby(1) at printing "Hello, world!". But since you presumably had ruby hot in cache and not perl the latter seems to be almost 4 times as slow.
Here's a better benchmark, which runs each of these 500 times and takes the average: http://gist.github.com/630868
Which yields these results:
Rate clojure php emacs python ruby js perl awk lua shell C
clojure 0.844/s -- -97% -97% -98% -99% -99% -99% -99% -99% -99% -100%
php 24.6/s 2812% -- -2% -43% -75% -76% -78% -82% -82% -84% -89%
emacs 25.2/s 2882% 2% -- -41% -74% -75% -78% -81% -82% -84% -88%
python 43.0/s 4995% 75% 71% -- -56% -58% -62% -68% -69% -72% -80%
ruby 96.7/s 11361% 294% 284% 125% -- -5% -15% -28% -29% -38% -55%
js 101/s 11919% 313% 303% 136% 5% -- -11% -24% -26% -35% -53%
perl 114/s 13397% 364% 353% 165% 18% 12% -- -15% -17% -27% -47%
awk 134/s 15743% 444% 431% 211% 38% 32% 17% -- -2% -14% -38%
lua 137/s 16134% 458% 444% 219% 42% 35% 20% 2% -- -12% -36%
shell 156/s 18359% 534% 519% 262% 61% 54% 37% 17% 14% -- -28%
C 216/s 25440% 777% 756% 401% 123% 113% 89% 61% 57% 38% --