The Sensor Overall Score is normalized fo a defined printing scenario of 8 Megapixels printed on a 8×12-inch (20cm x 30cm) size at 300 dpi resolution. Any other normalization, even at a higher resolution, would lead to the same ranking, given that any camera that cannot deliver the chosen resolution is eliminated from the comparison. Źródło DxO.

Czyli 42MP matryca oceniana jest na 8MP druku, wyniki też są brane z (_._) dużo już się o tym pisało na forum.