Comparing Australia to New Zealand in this regard is stupid. There're totally different social and historical forces at play.
For one thing the Maori united, organised and manged to effectively fight the British to a stalemate, which forced the British to make peace deals and arrangements to work with the Maori instead of being able to simply dominate them.
That never happened in Australia (or anywhere else that I can think of), and it creates a totally different dynamic historically, because instead of being a conquered people, which if we are being honest is what the Aboriginals were (as were the Scottish, Welsh, Irish, Cornish, Indians, etc, etc), the Maori were never conquered and as such forced the British to treat them as equals (well as close to equals as was possible in those times).
So yeah trying to compare Australia with NZ is like trying to compare apples and oranges, which is why you have such different outcomes.
Not if they weren't English...
Good luck finding Irish, Scottish, etc, people that weren't connected by family to the aristocratic class in London that weren't treated terribly. Heaven forbid that you were a Asian person (normally Chinese) that had come to the gold fields or something.