All google sites/apps will run faster in Google Chrome than any other browser. Is it true?
The benchmark they are referencing is this one:
(Bigger score = faster)
Try running that on different browsers - the difference is most noticeable when changing from Internet Explorer to Chrome.
On my Mac, Chrome 6 gets 3500, Opera 10.53 gets 1760 and Firefox 3.6.4 gets 170. My iPad gets 82.
If you want a less biased benchmark, take a look at http://www2.webkit.org/perf/sunspider-0.9/sunspider.html - although Chrome does best there as well.