Video shows winner of browser battle between mobile Safari, Android and IE9
We also need to tell you that the browser used on the HTC Windows Phone 7 device is the upcoming IE9 with hardware acceleration in the browser which means that the software on the HTC Windows Phone 7 device is not yet available for the public to use. Using an unreleased browser to compete with two browsers currently available possibly skews the results in favor of a desired objective-it is not playing on a level playing field. In fact, it is like comparing oranges to an Apple-and an Android.
source: YouTube via GeekWire, ElectricPig