Yes, but this is major evidence of short-sighted thinking. If you're resorting to using a silly marketing campaign to convince people worldwide to come apply for jobs in your city, you have a serious problem already with a lack of skilled people, otherwise you wouldn't be resorting to such a desperate technique.
I think it is win/win. Presumably the Engineers interviewing have a salary already that the NZ company would have to compete with. The NZ lifestyle as well may be seen as a benefit not dissimilar to free food, foosball, laundry etc...