Kiwiguy:
Maybe (quite possible) I have missed the point...why wouldnt business travellers go on JQ for a 50 min domestic sector AKL-WLG...brand new A320 v old 733. Sure you might get a cup of tea on NZ, but assuming JQ follow same model as in Oz you can at least buy sandwich, cookie, etc etc...or who knows maybe they will throw in a cuppa to compete...
In MEL, the AVV-SYD route for JQ carries a very high percentage of business traveller now and that is a sector time similar to AKL-CHC, so much longer than AKL-WLG.