I don't know most of those songs, and I've been to New Zealand twice. Other posters are right - seems like Will to Power's "Freebird/Baby I Love Your Way" should really be there. That song's like 20 years old now, maybe NZ listeners just don't remember:
FWIW list doesn't include Moony's "Dove/I'll Be Loving You Forever" and Spiller's "Groovejet/If This Ain't Love"...