I remember the thumping the All Blacks got against the Wallabies in Sydney in 1998. 28-7 or something like that. It was such a catastrophic loss that, in hindsight, it was a portent of a period of dominance that Australia would hold over New Zealand for about 4 or 5 years.
The thumping at Eden Park in the first match of this series was similar. In that match, the traditional underdog got up, not just to beat their historical superior, but to cane them. Aussie was as completely shut out of that game as the ABs were in 1998.
Because of this precedent, I expect the Black Caps to dominate Australia over the next World Cup cycle, culminating in a NZ CWC victory in 2019. Probably few people think the Black Caps are the No. 1 team in the world, but to me if you win a World Cup and then, a year later, with half your team different, you comfortably lose an ODI series, then your claim to still be No. 1 is pretty thin. The Aussie team of today is simply not the same team that won the CWC a year ago.
That's not to claim the BCs are No. 1 necessarily. I think it's undisputed. But if the No. 1 ranking was a championship belt like boxing, the BCs would have just won it.
Probably after that we will return to mediocrity for the next 20 years. But until then it's going to be a great ride.