As you can see, the outcome of this test is as expected: Chrome is the winner, with Opera putting forth a good effort in second, Chrome's WebKit cousin Safari came in a distant third, but still far ahead of the other two contenders.
JSBenchmark isn't new; actually it has been around for some time now under it's former name: Celtic Kane. This benchmark takes only seconds to run, and even provides the average of all iterations automatically. We ran JSBenchmark five times.
JSBenchmark delivers nearly the same results as Google's V8 Benchmark, except Safari places higher than Opera to come in second place this time. Chrome still wins by a solid margin and Internet Explorer again takes dead last.
In the Mozilla test we see Opera way out in front. So far, in fact, that I find the result highly dubious, especially considering the errors it experiences. Chrome comes in a distant second with Safari trailing behind in third (but still way ahead of Firefox and Internet Explorer).
Here, we see Chrome take the win with Opera very close on Google's heels. Safari loses much of its ground to Firefox in this test. IE does what we've come to expect by now, placing a distant fifth.