Correct.
ANZ has reduced their exposure at 31/3/2015 to $11.3 billion,so as you point out it is only a small % of their total business.
However, if you read this thread, I have been ridiculed for saying HNZ did not have the same exposure as the Aussie banks .
Like you, I am a great admirer of the Australian banks, and have only been doing comparisons, so people have a true picture that HNZ's dairying exposure has been low.
Yes the slow down in dairying will affect all NZ,but will have very little effect on HNZ's profit.