Where Google Chrome is supposed to separate itself is in running web apps, which ties in with Google Docs, etc. They've designed it to be a better browser for running these, by things like having each window or tab run as a separate process so that if one crashes, it doesn't take the others with it, having a much speedier JavaScript engine, and having an application mode where you create a shortcut to a web app that opens the web app in a window stripped of browser "extras" to allow the maximum amount of space for the web app.
Google is betting that people are going to be turning to web apps more and more, and that they will turn to Chrome as they do so.