Chrome is all about delivering web content to the user, as the web page developer designed it. Firefox moves the balance of power closer to the user. And not just with extensions, but by building in Readability mode and letting users pick fonts, sizes, colors etc. Even though Firefox is going to move away from their old addon model, they are constantly pushing to standardize more functionality in the new model. They really want users to experience the web on their own terms, even when that means putting a lot of extra work into the core framework of the browser.
