I have never used Moveable Type as a blogging platform. I found WordPress to be better than Blogger in many ways, and moved a large number of my sites over to WordPress (but only on my own domains). That being said, I am frequently asked what are the differences between WordPress and Moveable Type, especially for a business blogger who might experience high traffic load.
Om Malik recent was taking a look at Rojo from a traffic perspective. What he didn’t touch on, although he did refer to a previous post, was that the Rojo page was actually a very poor quality splog.