The IE9 scores over Chrome both in frame rate and no.of polygons by huge margin consistently. The site runs super smooth and fast in IE9 whereas its choppy in Chrome. Another main factor according to me is the CPU resource usage. Though the CPU usage seems to be same in the above video, the CPU usage by IE9 is much more less, I mean by almost half of the Google Chrome usage. You can try it out by yourself to see how both both browsers perform. The site I used for testing is http://www.visitnmc.com/.