@Jeffro -

To say, then, that WordPress is just blogging software is naive. Likewise, to say that WordPress is not blogging software is a bit disingenuous. The reality is that WordPress is a very successful blogging platform, as well as the world’s most successful CMS.

This is far more accurate.
Just because something is successful does not mean it's the best.

e.g. IE7 and IE8 were supremely successful.