Not sure why you guys keep bringing up the currency conversion rates?
Only relavant if you want to spend that currency outside the country you earned it.
You dont hear the Poms converting Australian salaries to Pounds Sterling and then laughing out loud, do you?
In my experience you spend a dollar in NZ like you would spend a dollar in Aussie. Sure, there are differences but the buying power between each of them in their own countries is not 24% different.
Of far more relevance is income tax paid on those amounts. At those sorts of salaries the Kiwi will have less dollars in his hand after tax. The income tax calculators on the ATO and NZ IRD websites will give you some idea.