Just came across this article which I think sums it up quite well:
https://www.odt.co.nz/sport/cricket/domestic-game-foundation-black-caps-built-success
Add to that some of our lesser lights play in overseas leagues and usually do very well ... most of our players seem to perform better in the CPL than they do in the Super Smash.
I just find it very annoying the comparison and dragging down of our comp compared to Australia's. It reminds me of something Shane Bond said in his book, the general narrative in his time was that NZ were battlers who overachieve, but his view was we have some of the most talented cricketers on the planet, and we often give ourselves an easy way out by playing into that battler/overachievement tag. I don't think you could say that's really the case now, apart from this mentality that Australia is the ultimate in cricket and we are lucky to be playing them, need a side in the big bash, etc. It seems to me to be something that is still ingrained in us even at the highest level.
Well in my opinion our league is just as good, if not better. Who cares about overseas players coming in, I'd rather develop our own players and give them the chance to step up. And I'd sure as hell rather watch a game in the sun at one of our grounds half full than a 70-90.000 seater in Aus that has half the crowd rattling around in it in the middle of night.
And current Test and ODI rankings indicate what we are doing is working pretty damn well for us, better than Australia.
Sorry anyway, rant over.