My mate owns as tx5 turbo(3in zorst, pod, boost controller @12psi) and he says that he used to kick r33 skylines until I bought mine, left him smoking his front wheel at the line:D
The only way to do a good comparsion is to line a wrx and a skyline up and say first to the light post 400m down the street!
My other mate owns a vl 3ltr with 2.5 inch zorst and because it sounds loud he thinks it gos fast, and claims to have beaten all most every car on the road(slightly bulls$*t) but you know what I mean.
Talk is cheap and most drag races are not real races any way!
My 2 cents and only my opinion
ps I love rexs:D