Going by what you've posted, it's suprising anything gets sold 'outside America' at all...
So you're saying Nissan hasn't got a chance of selling the next GT-R here because of an already saturated luxury car market, yet Ferrari manage to sell a handful of cars each year? I realize prestige, a long established name and brand loyalty come into play with a marque such as Ferrari, but buying trends change, and I don't think Nissan - or any Japanese maker for that matter - are going to stay where they are in the market forever.
Take the Australian arm of Infiniti for example. Back in 1990 Nissan had the 'guts' to enter the Australian luxury car market... but failed largely because of the abscence of the things I mentioned Ferrari had, in particular prestige. The maket wasn't ready for it, and voted with their feet and went to other dealerships instead.
Fast forward 16 years to where a potential Porsche-killer sports/GT car is involved, in an Australian market thats bigger, stronger and more openminded towards things of Japanese origin than before, and I think the next GT-R will sell... and heres my point: Nissan *will not* sell the GT-R in Australia for profit. In fact thats where I agree with you most, the USA is probably the only place where Nissan will actually make a few dollars on GT-R sales... but only a few. The next GT-R is a brand leading 'hero car', and as such Nissan is using alot of it's capital gained over 7 - 8 years of frugal and intelligent business practices (made possible with the help of Renault) to market a legendary name attached to a soon to be legendary car.
The next GT-R may be irrelevent and over the top technically advanced by the time it's released, but the car *will* be made in right-hand drive, so until Nissan say otherwise, I would definately expect at least 100 examples to make their way to Australia.