No, actually it isn't. A chroot environment to run Sublime and a few other GNOME applications is not the opposite of "just works." You're going to have to do a hell of a lot more configuration in OS X than in Chrome OS if you want to run X applications.
First of all, why would I want to run X applications?
That said, let's say I do -- so I download and double-click the MacPorts installer, and then run 'port install' to install an X11 app from a binary package.
