I have a strong feeling something is up with their calibration techniques. A ~7200k greyscale and a green point almost out of the park is not something you should end up with on a TV with RGBCYM adjustments in its CMS unless the manufacturer completely dropped the ball (not to say Sharp didn't do just that). It also sounds like it was crushing whites, which is a danger with designing a local dimming TV, but I'd quite like to see the gamma curve the set has to see whether it can be fixed through calibration.
Given the XBR8, A950 and 111FD all come up quite nicely after calibration, and that the Sharp is a significant premium over all three, it needs to do better than that. However, I'm willing to give it the benefit of the doubt and assume the fault lies with the calibration, not the TV, for now.