I would agree that i wouldn't trust a Kiwi beer that'd had to sit in a shipping container for a month and then in the store shelves after that. I'd even wonder about oxidation just being en route for that long.
Reason german beers hold up longer is that they don't... its more that they're not hop forward but oxidation still gets at them.
Now, I don't have the world's most precious tongue but I respect the time and beer question.
----
I wouldn't mind doing a 6 month vertical on one of the more reliable (quality and frequency) made IPAs. For argument lets say sips of sunshine. Say fresh as it can be, 3 weeks, 6 weeks, 12 weeks, and 24 weeks. Seeing what I learn because while "I know" this to be true about hops I don't see it.