The used screen will make a big difference. If you use a good IPS panel or a OLED display you most likely get a better score than you would get on a TN Panel.
A friend of mine is repairing Monitors. And he uses a few test pictures to check the panels and to adjust the colors. . .
On a good IPS Panel you can see differences in colors much easier than on a TN panel. But if your calibration is off the best panel will not help.
I can not find my test pics (i got from my frien) but on WalVisions - Full Field Test Patterns you can find every test pic you need and a lot of infos about panel differences and calibration information.
With one eye not really usable in this test (cataract) i still got 8 Points with the other one. Not to bad with 42.
