This questions for Dennis or Eddie: When the season comes to an end, the Championship tally will be based on each drivers best 6 out of 8 rounds, correct?
Hey T, sorry it took me so long to respond. Personally, I'm not the biggest fan of the current specs, as the characteristics (in terms of strengths & weaknesses) amongst the cars varies a bit too much for my liking. Having such dramatic differences in the characteristics between the cars (with the NSX being a bit of an oddity of the bunch) only hurts the quality of racing we could be having ultimately and brings about more variables...but I didn't do any testing of my own, nor am I the creator of the series, so my opinion is only worth so much really
I think if I had created this type of series, I would have just gone with R2's, as it would have been much easier to achieve parity and much more similar characeristics amongst the cars, without having to stray too far from the true potential of a GT500 car IRL. From my perspective, the fundamental problem atm (at least between say the NSX & GT-R) is that the NSX has too much power/downforce/weight, while the GT-R has too little power/not enough downforce/and too little weight. This means that with the current specs, the NSX has a moderate advantage on the tracks that generally have a higher average speed I would say....although I'm not really sure as to what will happen at the Nordschliefe. But on the slower speed tracks (Monaco & Nurb F in particular), I think the GT-R has a pretty sizeable advantage as well, not to mention that these are tracks where the draft isn't nearly as beneficial to the car behind, in comparison to tracks like Monza, Spa, Indy, Le Sarthe etc. So while you might have the potential to hang onto the rear of an NSX on some of these circuits (by using the long straights/draft to your benefit), this surely won't be the case for the NSX when we go to Monaco or even Nurb F most likely. So while you were able to get a decent result (3rd overall) at Spa (where the NSX had a healthy advantage), I think the NSX's are going to have a much harder time scoring a podium at Monaco & Nurb F most likely, as BOTH the GT-R & Lexus will be a fair bit stronger here. Without mentioning you, I'd imagine guys like CSLACR, Wardez, & Biffy (and Noss & Replay if they're in D1 this race?) could be strong contenders for a podium spot here at Nurb F, and will surely give even the quickest NSX drivers a hard time if they can just keep things on track and drive a clean enough race. Who knows, I wouldn't be all that suprised if we don't see an NSX even qualify (where I feel the NSX is at its strongest) in the top 3-4 either, especially since both Adam & myself are loaded up with a considerable amount of ballast (Adam moreso).
I for one have not done much testing between the various cars, but I think it's safe to say that the NSX probably does have a fairly healthy advantage, if you were to compare the qualifying pace on all of the circuits (not including Nordschliefe...which I feel is a bit of an unknown). I would imagine the average gap in ultimate qualifying pace over the course of the season (on a dry track) is probably somewhere around 3-4 tenths if I were to take an intuitive guess. But I don't think that really tells the whole story though, as there are so many other important variables (like the potential to draft on certain circuit) that I think might play into the favor of the GT-R. I think on the whole, the GT-R surely has the better/more balanced tire wear if you have a proper setup vs. the NSX, and this will probably be far more noticeable on the slower speed circuits (especially Monaco) where the NSX feels rather tankish, and is very hard on the rear tires). Ballast is certainly another variable that will affect the cars differently and hasn't really been much of a subject for debate...so who knows, one car might be hurt another couple of tenths of a second over another when fully loaded with ballast
The same can be said for the cars performance once/if we do any running in wet conditions to. Also, I think it's reasonable to say that it is more difficult to maximize the NSX's potential through an entire stint/race, particularly on the tracks that it's not suited to...so this is something to take into account as well. And being that the NSX generally has worse tire wear, this could be something that plays a huge part when we come to certain tracks where there's a fine line between a 1, 2, or even 3 stopper.
Sorry if I rambled on a bit too long. With all that said though, there are so many variables that none of us really have a great deal of perspective on, so in many ways we are going down a bit of blind road. I think when it comes to the whole picture and taking most of the variables into account (beyond just pure pace over 1 lap in qualy), I think things are reasonably close though. And as you can imagine (hell, you probably remember when we were testing for the ISC, trying to achieve parity), it would take basically an endless/mind numbing amount of testing to truly get parity amongst the car when you factor in all of the possible variables we have to work
) but it was a real handful on tracks like Monaco and Nurb GP/F with its lack of low speed traction where the 4wd Subaru was the opposite as you say could just keep up on the straights but destory it in the corners. 
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