Not sure where you read that. As far as I am aware, the FAA ATPL doesn't count for much here in Australia.
In order to get your Aus ATPL, you'll need to have your CASA CPL, you'll still have to do ALL the ATPL exams here, and, once they're completed, you'll get the exam credit. Once you meet the hours/experience requirements, you'll get the ATPL. No flight test required that I'm aware of (unless thats changed recently).
Hope this helps.
HP