first let me say a G doesnt run 15.27 in a 1/4 bone stock it should run 14.00 and as far as racing a WRX you shoulded beat him so its time for a driver mod.
a G35 should be able to beat the fllowing cars:
Cobalt SS
Neon SRT-4
Impreza WRX
Mustan GT
S2000
350Z
all this is possible if you know how to drive

 

first of all a G35 6mt runs 14.2 the 5at is rated to mid to high 15's and a wrx pulls 13.5 in a 1/4 miles so what are you even talking about?

theres 3 cobalt SS out there ones N/A that does 15.6 right there with a 5at
one is supercharged that does 14.4
and a turbocharged one that does 13.9 thats faster than a G35

a mustang gt also does 13.5 in a 1/4 mile

an S2000? i didn't look it up but im gonna hope that a G beats a weight reducted civic i dont even know why u mentioned that one like its a competitor

and i think your calculators broken if you think that a G35 being 300 pounds heavier and 7hp less than a 350z is gonna beat one.

maybe on the street it would be the case of whos a better driver but thats not what we are talking about. equal drivers the G doesnt rate that well its a heavy luxury car so simmer down