The absolute truth is that stock on stock, the r33 would not beat a Rex if its life depended on it. I can say this because i have been against a couple of newest model STI's and they put up quite a fight, mind you my car aint close to stock. I think some people are getting a bit too paranioid thinking that nothing can beat their skyline, but hey, there is always someone faster than you out there.
And about the STI's. The launches on the sti's are crap, they suffer soo much low end lag up to just under 4000RPM!!!! They dont launch too well at all...