Nice analogyFirefox I kind of compare it to driving a SUV, it's slow when starting.. once it gets going it's good and has a ton of utility.. especially with the Web Developer plugins and error console.
Chrome/chromium is like driving a sports car. It's fast, but hit a bump and it crashes.
Internet Explorer, reminds me of a Honda Civic. it gets the job done, may not be the fastest. but since it's the world's most common car it gets stolen a lot. (virus and trojan magnet)