Voting for the R35 as usual. The Audi R8 just an Audi, and it get's beaten by a giant video game with better overall looks, performance, comfort and technology
Voting for the R35 is fair enough (after all, I did too) but the rest of this post makes me want to bang my head repeatedly against my keyboard.
"The Audi R8 just an Audi" - Audi make a
very good range of cars at the moment, and have done for some years. The R8 is probably the best of that range of very good cars, which genuinely says something. The Nissan is just the best of a mostly lacklustre range of other Nissans.
And depending on your preferences it might not even be the best Japanese car so far. Much as I like it, I prefer the NSX, Japanese Civic R, Integra (pretty much any version)... in fact, most Hondas, most Mazdas, any Toyota MR2 and most Celicas, a number of Mitsubishis, even a few Daihatsus... quite a few cars really. Sure, they may not all be better all-round than the GT-R but it depends what you look for in a car.
Certainly, I'd say that early Corollas and Civics are more historically significant given the impact they've had on the motoring world, and that even the earlier R33 and R34 Skylines have been more instrumental in showing the world what Japan can do with technology - all the R35 has done is taken the same theories a little further to compete with the next level of performance cars.
"...it get's beaten by a giant video game" - I'll ignore the horrific use of the apostrophe here and get straight to the content of the quote. I don't know about anyone else, but "video game" qualities don't really endear me to a car, and it makes me cringe every time I hear the GT-R described as one.
"with better overall looks, performance, comfort and technology" - That the GT-R has better performance and probably technology is without question, but looks and comfort are pretty subjective. Personally, I can tolerate the looks of the GT-R given its other virtues but it's certainly not an attractive car (and I doubt I'm in the minority feeling this way) and I've never heard the Audi described as any less comfortable than the GT-R so I'd be inclined to disagree on this point too.