To make it short: I'm impressed.

There are those who claim that Wordpress is extremely user friendly, while Movable Type is the opposite.

Well, there is a bit of truth in that statement: Wordpress is extremely user friendly for non-technical users (a.k.a. morons). On the other hand, if you have some computer skills, you'll feel more comfortable and free with Movable Type: It lets you do whatever you want to, without limiting your options or constraining you. It's kind of like the eternal Windows vs Linux dichotomy.

As for security, Movable Type wins hands down.