I wish I knew if lower is better or higher is better on the first page (y axis is not described on the graphs).

All these benchmarks have "asmjs" in their names, which tells me they are not benchmarking idiomatic JavaScript, but JS generated by emscripten. If that's the case, they do not represent the performance of hand-written applications, which is the majority of all apps on the web.

It would be more interesting to see results for benchmarks such as DeltaBlue or Richards. These would correlate much better with gmail and hipmunk performance, as opposed to in-browser demos of Unreal Tournament.

I'm trying to figure out how to measure performance here. Both Chrome and Firefox seem to take about the same wall-clock time to go through 5000 examples. Should I be waiting longer? Measuring something else?