Safari Speed Test: Apple iPhone 4 vs 3Gs

ObamaPacman has uploaded a video comparing loading times of different websites on Safari running on the iPhone 4 and the 3GS. The latter, my current model don't end very well as you had expected. It's interesting to see how even if the iPhone 4 looks slower after tapping on the screen, it catches up pretty well.
Have you noticed any big difference in performance with the new RAM and Apple chips on the 4th version?