USMLE Validity in Australia / NZ

Hey guys, I've been searching the internet for about an hour now and got very confusing and contradicting facts.

Is there a definite answer whether USMLE steps 1-3 passage, is enough to practice as an MD / apply for residency in Australia, and NZ, without taking additional examinations? is there a difference between the policy of the two countries?

Thanks.
Ilya