Yeah nosy is right on that. Here's some other information from the FAQs blog
The Admin can do everything. Complete power over posts, comments, settings, theme choice, import, users - the whole shebang. Nothing is off-limits.
They can publish any posts, edit any posts, edit any published posts, edit any pages, moderate comments, manage categories, manage links and upload files. They can also delete any posts and any pages. They can read, edit and delete private posts.
So it doesn't seem to me that editors can access the admin area to add users or delete them. It doesn't seem they can access the profiles and email addresses but it's an interesting call so I'll be waiting to hear the answer too.
Oh Mark ....