it might not be as exclusive as Enzo or CGT, but it is affordable supercar just like Ford GT was. Performance alone guarantees that. Price, badge and exclusivity matter only for people who don't know anything about cars.
You can't compare the GT-R with the GT. The GT-R is a very impressive sports saloon/2-door coupe. The GT is a supercar.
I agree, if it's fast it's a supercar, if it's slow it's not a supercar.
No. Because then you have the massive grey area over what defines fast. The C63 AMG is pretty quick... is it a supercar? The BMW M5 then, it has 500bhp. Supercar? No, sports saloon. The top Evos get to 60 in 3-4 seconds. Are they supercars? No, they're more sports saloons. That's why you can't just say that anything fast is a supercar.
a supercar can have 4 seats
No it can't.
a supercar doesn't need passion
Yes it does.
a supercar can be practical
This is a grey area again. How do you define practical? The McLaren F1 was practical compared to the Ferrari F40, but both were supercars. The M5 touring blitzes them both but it certainly isn't a supercar.
a supercar doesn't need to be dramatic
Of course it does. If it blends into the rest of the traffic then there's nothing "super" about it. You can see and hear a Lamborghini coming from a mile off. Supercars draw maximum attention everywhere they go, and there's nothing understated about them.
a supercar doesn't need to be pretty
Again pretty is a subjective area, my girlfriend thinks a Pagani Zonda is hidious but I love it. On the other hand, she knows it's special. We went to the london motor show, and she asked me why Nissan had so many of the same car (she was referring to the GT-R...). I had to explain to her that it was a performance car, and to be honest she was completely nonplussed by it, but show her a Lamborghini and she needs extra air!
a supercar doesn't need to be rare, and a supercar doesn't need to be outrageously expensive like the Veyron.
It certainly helps. What's super about it if every Joe Bloggs has one? People pay that much for the beauty, the presence, the massive engine, the noise, the sense of occasion... if they could get that from a supermini then what would be the point of having a supercar? I wish I could phrase this better but the high price and exclusivity keeps them out of the hands of the plebs and makes the driver feel special. A mostly-anonymous Nissan doesn't do this.
The Nissan R35 GT-R is a very, nay
extremely, good car. But it is
NOT a supercar. It is more than possible to have supercar humbling performance without being a supercar itself.