After looking all over the home page, I had no idea what this does.
Then, after creating a page, I had no idea what just happened or why I should care about any of the information presented. Also, the page components still had the crosshairs mouse pointer style even though they were no longer draggable.
Steve Souders is the man who was the head of Yahoo's Exceptional Performance Team, which gave us these rules for speeding up your website: http://developer.yahoo.com/performance/ and also YSlow.
Cuzillion is something he seems to have made to give you a generalized example of what components affect your performance and by how much. So it allows you to test a fabricated example rather than a specific website.
Then, after creating a page, I had no idea what just happened or why I should care about any of the information presented. Also, the page components still had the crosshairs mouse pointer style even though they were no longer draggable.