Well, saying "I like Xubuntu better than Ubuntu" kind of makes it seem like he thinks they're different. Xubuntu is just the name of the spin that comes with XFCE by default. If you're using Ubuntu or Xubuntu, you're still using Ubuntu.
The right comparison here would be, "I like Ubuntu's XFCE theme much better than their GNOME theme", or whatever the specific case is. Maybe he likes XFCE better altogether, and then it's "I like XFCE more than GNOME".
The right comparison here would be, "I like Ubuntu's XFCE theme much better than their GNOME theme", or whatever the specific case is. Maybe he likes XFCE better altogether, and then it's "I like XFCE more than GNOME".
See what I am saying here?