Sure it wasn't just built by the same guys who did the Obamacare one?
Funny you would mention that becsue based on what I read this is also what caused some of the very early issues with healthcare.gov. On the second page they were loading a lot of files specifically CSS and JS files. Typically for development you split them for easier identification and then aggregate them for deployment. The site basically DDOS'ed itself but that was fixed and not the only issue.