I dont think these laptimes for the STI are 100% certified. If you look at this site you'll see that the massively focused Impreza STI S204 posts a time of 1:04.90 in 2006. Quite a ways off the 1:04.72 (relative to the other cars times on this very short and technical track) listed above. Lesser, standard STI's will be a long way off these kind of times.
So typically, one can assume that stock for stock the EVO remains the faster car on a track.
Check out:
Tsukuba Lap Records
Also see that the GT-R has jumped to spot #2...