Heh Demz, looks like a typo to me.
I think you meant to type RedHat, not Debian. Ubuntu is based on Debian, Fedora is the testbed for RH.
Yes, there's a different focus. Ubuntu's number one bug is that MS is more popular. They strive and do a pretty good job, of creating a distribution that works. More focus on creating a good user experience out of the box.
Fedora is more prone to throw things in before they've really been made to work properly as a great deal of the focus is on testing.