Let's face facts, a lot of guys with turbo kits on their Civic Si have no freakin clue what they are doing, they just have a lot of money to throw at their car.
The only turbo Honda that I fear has, at a minimum, a four angle valve job, stiffer valve springs, and has dropped the compression at least into the 9.0:1-9.5:1 range. I have no idea what C.R a Honda motor runs forstock, but I think it is like 10.5:1, definitely not turbo-friendly. The WRX runs a meager 8.0:1 compression and that is why it can handle mad boost.
With the right builder and tuner, the GS-R turbo is awesome. I have to respect any street car with triple-digit 1/4 mile trap speeds!
As for traction, well, sub-2.0s 60' times are why I love my WRX!