The following video is a little bit obsolete and shows some JavaScript benchmark tests on Safari and Firefox. The guy who made this video doesn't specifiy which version of Safari he is using, but after taking a look at the video date I guess it's still Safari 3 (which doesn't have SFX, by the way). The video description claims: "Guess who wins". Well, I guess it was Firefox at the time but now things are changed. Things change.