gotta also remember Auto-X is also about the driver
at my Auto-X's I have the older 2.5rs show up and a newer WRX
the WRX runs in the AS class on Kumho slicks, other stock
and the RS runs in the STS (w/ me), on Falken slicks, springs/shocks, intake and cat-back
times vary on course set ups for their within .2-.6 sec of eachother, one takes the other at one set up, and the other takes the other on another... same car set ups, same drivers, all depends on skill, attitude, etc
otherwise they're both well balanced cars stock and modified, both ever close in handling, just depends on skill and the driver
Later,
Jay