They used the SunSpider benchmark [1], which only tests javascript: "This benchmark tests the core JavaScript language only, not the DOM or other browser APIs."

They used the SunSpider benchmark [1], which only tests javascript: "This benchmark tests the core JavaScript language only, not the DOM or other browser APIs." [1]http://www2.webkit.org/perf/sunspider-0.9/sunspider.html http://www2.webkit.org/perf/sunspider-0.9/sunspider.html