I see it as NEC's acknowledgement that in the US, there are only the super-rich(30") and the rest of us poor slobs(24"), while the sophisticated---and more income-equal--- Europeans can afford a 27", and don't wish to aggrandize themselves with the grotesque, ostentatious 30".
Seriously: If NEC thinks they can make money selling the 27" in North America, they'll sell it in North America. I promise.