V8 | SunSpider | Peacekeeper | |
MicroB (default browser) | 21.2 | 35.12 | 128 |
FireFox | 21.4 | 15.84 | 141 |
Opera | 49.5 | 24.41 | 119 |
Qt 4.6.2 | 105 | 12.04 | 238 |
QtWebKit 2.0 | 104 | 9.36 | 286 |
Chrome | 113 | 8.84 | 344 |
Chrome is really fast as a result of its excellent V8 JavaScript engine and frequent release cycle.
Qt 4.6.2 is still quite good, especially considering the fact that the WebKit integrated is quite old. Note that QtWebKit will be released separately from Qt, meaning we could enjoy more about the latest WebKit technology then.
However, both Opera and FireFox (MicroB uses FireFox's Gecko JavaScript engine) have quite a long way to go. Moreover, when running V8 and Peacekeeper, both MicroB and FireFox complained about unresponsive JavaScript.