[bd]

You didn't read carefully - not Sunspider, V8 benchmark:

  Firefox 3.6.4       494
  IE9                1200
  Safari 5           2644
  Opera 10.54        3393
  Chrome 6.0.437.3   5148

Saying that Chrome is 10x faster than Firefox on the basis of V8 benchmark would be as misleading as saying IE9 is "orders of magnitude" faster than Chrome on the basis of fishtank demo.

Though it certainly makes great headlines.