I think that says it all. I'm just surprised there's no privileges associated with Area51 is all.
Is this a dupe of meta.*.stackexchange.com/privileges doesn't exist ?
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The page you linked shows a list of privileges; you don't see all the privileges you see in other Stack Exchange sites because the code for Area 51 is a fork of the normal code. For example, Area 51 is about proposals, not questions; this means the code needs to be altered to handle proposals where other SE sites handle questions.
The different code has effect on the privileges, but also the badges; for example, a badge like Organizer would not have any meaning on Area 51.