You can tell by comparing the Print vs Screen modes. The print mode results are scaled to 8mp for all sensors. The screen mode is the per pixel results.
All recent sensor results drop when going from Print to Screen mode as they have more than 8mp. The X10 was no exception so that shows the test was done at 12mp (HR). If one of the EXR 6mp modes had been used then the results would have improved when going from Print to Screen.
I too wished they had test the 6mp DR400 mode for this sensor. They can easily manually select it under Program mode by changing the Image Size and the DR. Then we could compare the 6mp vs 12mp results.