havent gone up against a wrx on the track yet..however, when i was still NA, there are several times that i've gone head to head with a 2.5RS and no matter what i do, i just cant hold it off and he passes me each time. granted that the car is suppose to be faster than the G20, none-turbo that is.
if you are just looking for a little drag race, i kinda played around with my friend's WRX (with Cusco Zero 2 coilovers!!! so sweeeeeet) and i was able to out accelerate him to 60mph..although he got a faster launch cuz my tires spins so freaking ez..