I don't know the exact numbers on a Z. i think I've read 0-60 time of low 5 second and high 13's to low 14's for the 1/4 mile. All I can tell you is my experience with them. The last time I ran Z it pulled up on me from a roll and I droped gear and floored it. The Z could not pull past me.We cam to a rather sharp trun so i had to slow considerably. The Forester might be as fast as a Z but it definely does not handle as well as one. Anyway I know you are comparing HP numbers, but you need to compare the 0-60, 1/4 mile numbers. You will see that the Forester is right there with a Z.

Subaru Forester 2.5XT
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C/D TEST RESULTS

ACCELERATION (Seconds)
Zero to 30 mph: 1.3
40 mph: 2.6
50 mph: 3.6
60 mph: 5.3
70 mph: 6.9
80 mph: 9.2
90 mph: 11.8
100 mph: 15.0
110 mph: 19.5
120 mph: 26.7
Street start, 5-60 mph: 6.3
Top-gear acceleration, 30-50 mph: 8.4
50-70 mph: 8.1
Standing 1/4-mile: 13.8 sec @ 97 mph
Top speed (governor limited): 129 mph