The ability to import posts and comments from other blogs is what sets WordPress apart from Blogger
But does it get images, too?
The ability to bring in all my old Blogger posts … and maybe my Movable Type ones, too, would be huge.
I’ll check into the images situation.
You can also export a WordPress blog as XML. That’s a great way to make backups as well as potentially move WordPress blog content to another platform. Blogger doesn’t have that, I think.