What capability advantage does it have over the A400M? I don't see any really and in fact I see it the other way around. Maybe looked at yeas but by then it will be far to late because the Air Mobility Study finishes at the end of this year and the first C130 is due to be retired in 2018.
The C2 can carry its full load(37,600 kg) to 6500km
The A400 can only carry its full load (37,000 kgs) 3300 km
This a distinct advantage I would say, plus
The C2 ferry range 10,000 km (6,214 mi; 5,400 nmi)
The A400 ferry range 8,710 km (5,412 mi; 4,703 nmi)
It also flys higher and faster , has the ability to land on short runways ( as can the A400), has been designed to operate form unprepared airstrips ( including snow),ability to fly international airway routes, tactical flight management system, automatic load/off-load system, in-flight aerial refuelling, night vision system and forward looking infrared systems. Some of which the A400M also has and a few other bits an pieces.
but for me at the end of the day a transport aircraft primary mission is to move loads long distances - which it seems the C-2 has a distinct advantage in.
Lets not forget there have been a couple of A400 crashes of late...
Also
if current projections are correct , the C-2 will be significantly cheaper
Can't hurt for NZG to at least make inquiries with the Japanese, especially since they government failed to take the c-17 option when it was available.
On the surface at least!!! it doesn't seem the NZDF and NZG are completely risk averse when there is a good deal, there are a number of programs that fit this category - buying the Aussie Sea sprite's springs to mind.