All I know is that from looking at all the comparative data here in Europe, the curve does not behave like that. This may be due to Australia having vast expanses of very low population...it is much more virulent in highly populated areas. More local geographical studies would be interesting.

Also, I am seeing other dashboards that have Australia's number a good bit higher...like on this one:

https://ncov2019.live/data?fbclid=IwAR3WZAw5j1JYCE0_v9qBSB0m1kqYP11XAO0fM_4Zi5QT40bqyqs6MArsuvo