If it makes any difference, looking at my dyno sheet, mine is making around the same power, maybe a little more at that RPM, and goes on to make 127RWKW at ~4600Rpm.
A few weeks after that dyno I realised the dizzy cap and rotor were shithouse, and the injectors need a clean.
If your is auto though, then your loosing around 10RWKW extra through the drivetrain.
1993 ED XR6 M5 (1 of 329)
Turbo on the way!!
1993 EBII Fairmont (Now wrecking, PM if you want any parts)
1988 Nissan R31 Skyline