one of the other most frequently searched terms on google is "google", because people don't understand that the chrome omnibox performs a google search, and they want to go to google to perform a search from a dedicated "search" box rather than a URL input - essentially, they want what the firefox UI gave them.
if you're trying to draw any conclusions about user preferences from user behaviour, you have to accept that you're going to be wrong about a significant portion of your users. one workflow might be "better" for some portion of your users, but it won't mesh with the mental model of some other portion of your users. different groups will form different expectations and habits, and a single UI will not completely satisfy the expectations of every group.