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That curve is flatter than I remembered, but there's still a peak and 3000 rpm is slightly below it (funny, rated peak torque on the EJ25D is 2800 rpm). It's not exact, but peak torque typically occurs very nearly the same engine speed as the engine's minimum brake specific fuel consumption (BSFC). Since BSFC is usually rated at wide open throttle where there is a minimum of pumping losses (best volumetric efficiency) your best partial load BSFC while highway cruising is going to be a couple hundred RPM less than your WOT BSFC. The overall torque output is still not very high, which is typical when an engine is tuned for a broad curve.
My Subaru (well, it was technically my wife's before we got married) is also an auto, but don't know too much more specifics about it than that. It's still a stock ~145k engine with a blown head gasket.
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