Population... underestimation?

[Grognard]

My premise is "based", on the following map:
http://img443.imageshack.us/img443/3766/battlelines.png
...pulled from this post (thank you Xyntech):
http://www.planetside-universe.com/s...9&postcount=10

So, I am wondering if they are (gu)estimating low. Those numbers on that map seem very reasonable to me, and yet... look how little of the map is being used on one continent. It appears, to me anyway, that there could be far more, perhaps even double that amount, once optimizations are complete.

I understand there are other factors, and that is precisely why I am posting this. I would like to hear opinions from others with more tech savvy than myself, weigh-in on the likelyhood, or unlikelyhood, that we might have even bigger populations.

Points? Counterpoints? Definitives?


Edit: What this map makes me hope for is: 1000x1000x1000. Support opinions, so no follow ups with "why?", please.