Check out this browser comparison between the LG Panther (Windows Phone 7), iPhone 4 (iOS 4.0.1) and Nexus One (Android 2.2).
Pretty neat little feature in IE on Windows Phone 7. It can load content in different tabs in the background, and as far as I know, this isn’t currently available on other platforms.
About the Author: Jonne is a mobile phone enthusiast who is currently pursuing his Bachelor's degree in Computer Science at the Vaasa University of Applied Sciences. He has been using the newest phones out there ever since the Nokia 5110 was released. Currently his choice of smartphone OS is Windows Phone 7.5.