Well when you consider that US peak server pops have dropped about 30%, and EU peak server pops have dropped about 20%, it seems logical that the subscribers have dropped by about the same factor. That puts current subs at somewhere around 185k. If subs had dropped by a factor of 3 like you suggest, I'd expect the server max pops to have dropped off by a similar factor.
It's not uncommon in the least for MMORPGs to have 3-4 times more subscribers than people online at the busiest period.
It's not uncommon in the least for MMORPGs to have 3-4 times more subscribers than people online at the busiest period.