[quote=Gowi]
 I think the big difference between an AGM and moderator is a lot of pull. They don't have to wait for a GM to show up to enact their perspective, they can make decisions based on the game as the GM trusts them to make decisions on CS's and so forth whilst a moderator still has a sort of uncertainty when they speak about CS acceptance. AGM's also have de-facto GM authority when the GM is absent. There's a few other things in non-ultimate games, but the thing here is weight.
[/quote]

Ah. So the finality of their decisions is key here, then. Makes sense I s'pose.