Super administrators: DarkUnderlord, Taluntain, Crooked Bee
Regular administratrors: VentilatorOfDoom, Infinitron
Super moderators: WhiskeyWolf
Regular moderators: Crispy, Scruffy, Scrooge, Jaesun, Zed
A super administrator is simply an administrator that can make other people administrators.
A super moderator is simply a moderator who has moderation privileges in all of the forums on the website instead of only a selected subset of them.
For the average user, this is all you need to know:
A moderator can fuck around with your posts and ban you from specific threads.
An admin can fuck around with your account and ban you from the forum.