Ubuntu and Fedora

So I have Fedora and it's GUI shell installed.

What's the difference btwn it and Ubuntu which I hear is the most popular flavor of Linux out now?

Nothing really.

Except they both have their minor problems, and it's how you solve them that makes them more of a winner in your eyes.

BTW shouldn't this be in Linux forums?

Yes, moved.

One of the major differences is that Fedora is based on the RPM Package Manager (RPM) system, while Ubuntu uses the APT package system from debian.

The biggest difference is that Fedora is Red Hat based whereas Ubuntu is Debian based. But yes, Red Hat based distributions tend to use Yum, Debian based use Apt.