fedora loads in less that 20s
but that's not what makes it better
it has more flexibility, security features (SE linux), and an advanced file system.
Fedora is considered to be "bleeding edge" tech, it's much more innovative.
ubuntu is more user-friendly, like apple of linux
fedora is more advanced.
it's actually intermediate in terms of flexibility. Gentoo, Arch, and Suse are very flexible, but not quite as cutting-edge.
ubuntu is not as flexible, and their update cycles are not as frequent as fedora. however, ubuntu releases are rather stable
*edit* you know what, if your OS does what you want it to, AND is fun, stick with it.
Ubuntu is the most popular distro because it is so user-friendly.