JavaScript relative performance is still a bit meaningless right now, because market share still counts for more. If you were to write a web app that required

JavaScript relative performance is still a bit meaningless right now, because market share still counts for more. If you were to write a web app that required the speed of Chrome, it would still suck for most visitors. This performance mainly showcases Google's platforms (e.g. some netbook with Chrome OS?). Google can write bleeding-edge, speed-dependent web apps, since the whole user experience is based on Chrome. For everyone else, this doesn't help much yet, but it does mean that the future is bright. Historically Apple and Mozilla have responded well to friendly jabs in benchmarks, so they'll surely work hard to make the next one look much better. And that's when the real fun begins. :)