I May be wrong... But doesn't Australia use the PAL format like Europe and Japan?
And on a reverse note, NTSC and PAL don't really matter on a PC, and is more specifically based things that use TV?
NTSC = 60Hz
PaL = 50Hz
I'm going on memory and speculation, so I'm likely wrong, though if what I said was true that does discredit the box art.
Despite my agreeing with it.
On a side note for you 360 fans,