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Wait fully retarded intake? What about scavenging? I don't know how accurate the online guides to racing cams are but the physics seems more or less valid. For the FRS engine the intake duration could be quite a bit longer as it is tuned for high end power afterall, but just looking at the 3GR-FSE case, it appears that there is some missing potential in several spots in the powerband. Although I suppose the 3GR (and 2GR) are more for low end torque.
Also on the subject of valve lift, why raise the valve higher than you need to instead of just "cutting" the peak of the cam lobe? Is it to keep the valve from floating? Seems like unnecessary friction.
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