The linked test wasn't "google's", it was independent. And you do realize that that cnet link you posted, while it might look a little anomalous for the safari numbers, shows a huge win for chrome?

Really, there isn't any meaningful debate that V8 is the current king of the hill in Javascript performance, by a pretty large margin. Your statement that Safari's engine runs faster than Chrome's isn't supported by any evidence of which I am aware.