In addition to the RGB settings, Mike adjusted the the Gamma settings and the basic controls (Brightness, Sharpness, Contrast...) Those are all reported on the Calibration page. If you aren't having your PT-AE8000 calibrated, you might try ours.
Mike has written up a good deal about his findings when calibrating the projector. You will find that on the Calibration page as well.
For now, however, a useful excerpt:
Mike's comments: Overall, the projector looks really good. Grayscale is not bad right out of the box, though there’s too much blue and too little red in Rec. 709 mode. It calibrates fairly well (see graph), but the color temp and RGB balance are not as flat as I’d like to see (note the peaks of red at 40 and 50 IRE in the RGB Color Balance chart and the bumps in the Correlated Color Temperature chart. None of this is really visible in actual use however.