Re: Aus Population?
I work irregular hours so I server hop frequently at different times each day.
The Australia server is mostly dead except for the usual after work to midnight hours in that timezone. Even then, you'll be lucky to get a full GA or supremacy match that can sustain for at least 2-3 maps.
If you want a server that has games going almost round the clock you may want to try the Germany or both US servers. But you'll need to subscribe to a ping reducing service like WTFast or Mudfish in order to get an acceptable gaming experience (150ms or lower).
I'm speaking as a PC player btw. Not sure how the game population is like on consoles.