I held gold status with Air New Zealand for a few years, and I’ve bounced between gold and platinum with Qantas since moving to Australia
I agree with all the points you make. Airpoints is a worthless system for earning airpoint dollars, its only value is for collecting status points. Unless I paid for a business class fare it was near impossible to earn enough APD to redeem a flight, whereas in Australia I’ve redeemed points for a number of business class flights on grocery shopping alone.
I think if you’re Australia based you’re much better to focus on Qantas status instead, unless you travel very frequently to NZ which includes domestic connections as there is a decent network of domestic lounges with Air NZ.
If I was to compare each status level though:
-Air New Zealand silver beats Qantas silver. Two free lounge passes a year versus one, but most of all one complimentary upgrade per membership year. These are quite valuable, as the poor value of airpoints dollars means you’re not competing against a huge number of upgrade requests. I know of someone who used their silver complimentary upgrade request recently to go from Y to PE AKL-IAH, Qantas offers nothing similar
-NZ gold beats QF gold. You receive two complimentary upgrades instead of one (I once used two upgrades at once to skip PE and go from Y to J AKL-LAX), and you have access to the full range of domestic lounges on the NZ network, rather than being herded in with the lounge pass holders and Qantas club memberships while the platinum elites get to access a marginally better lounge. In NZ lounges you’re trusted enough as an adult to get your own alcohol, and there’s no 12 pm start time for wine or beer. NZ gold is harder to earn than QF gold, and I think this helps with the quality of offering in food and beverages in the NZ lounges.
-QF platinum beats NZ elite, QF has first class lounges which NZ doesn’t have, and Oneworld has an emerald tier which allows you to access all first class lounges in the OW network bar QR. Star Alliance doesn’t have a tier above gold, so there’s no advantage in being NZ E over NZ G when it comes to lounges on an A* partner
One more point about status earning-NZ you only need to earn a sufficient amount of status points to reach a tier within any 365 day period, while Qantas your membership year is locked to the same period every year. This results in different advantages and disadvantages for both systems,