Erm, the difference is that Australian teams' best players are NZ players, whereas the NZ teams tend to be signing foreign players to plug gaps.
Not really the point but I disagree regardless.
Most Kiwi players that get an OZ contract are average ITM cup players that generally can't get a NZ super rugby contract (certainly not starting spots anyway):
Ged Robinson, Albie Matthewson, Telusa Veainu, Sam Christie, Jayden Hayward, Tamati Elison,Mike Harris...
These are the ones I can think of off the top of my head. Hardly world beaters, even within the franchises they play for. Tamati Elison is the exception but only due to exceptional circumstances.
The eligibility rules the NZRU have in place effectively prevent the foreign franchises from getting hold of our best players anyway....
The point is that things are changing mate. In the past NZ franchises plugged gaps internally via the draft - now they look overseas as well! (Look at what JK is saying re his locking stocks at the Blues)
Furthermore, check out the number of Ozzies now playing in the ITM cup:
Nic Stirzaker, Paul Alo-Emile, Michael Snowden, Albert Anae, Beau Robinson, Kimani Sitauti, Tom Murday, Ben Seymour...again, just theones I can think of off the top of my head. I know also there are players fromfrom France, Canada, Ireland, Wales, and South Africa all playing in the ITM cup as well...Not to mention the usual suspects from Tonga, Fiji and Samoa!
Have you ever seen an ITM cup with so much international diversity??