Well, SunSpider is nowadays kinda a test how fast a browser can run through a loop. I'd still wager Robohornet is a little better (and it also considers things

Well, SunSpider is nowadays kinda a test how fast a browser can run through a loop. I'd still wager Robohornet is a little better (and it also considers things like scrolling and rendering speed and DOM manipulation for certain scenarios – plenty of things that probably contribute more to how fast a browser feels than raw JS performance).