Not quite sure what you are asking. Why is the user ArmorGames created before Dan? I wasn't here for that specifically, but it isn't too unusual a thing in developing software or databases. You create a test user for your creation, which you may or may not end up using yourself in the end.
When it comes time to actually start using the application (or in this case, website), you begin creating users as normal...and you may have one or several old test users created before any of the real users.