Bios Magazine posted a comparison review between Microsoft IE7 and Mozilla Firefox 2.0

You may be surprised to learn that there's quite a contrast between the release of Firefox 2.0 and IE7. Firefox 2.0 is, to the regular Firefox user, not a huge jump as there are few new outstanding features. The reason for that is simple - it already had all the core goodies that real world users like such as tabbed browsing. IE7 is still playing catch-up from the back of the field and is thus more visibly changed. For Microsoft, IE7 represents a key piece of software in its critically important 'Live' initiative to deliver Windows, Office, and other products as services over the Web. The browser is the gateway to the Web, and therefore the window to Live services,

Microsoft IE7 Vs Mozilla Firefox 2.0