Thanks for your interest in DxOMark.
Depth of field is not taken into account for sharpness score. This ranking provides you with the sharpest lens without taking into account other aspects.
If depth of field is an important aspect, you can filter the ranking with our filter tool and select lenses with the maximum aperture you need.
For wide aperture one other score which could be more helpful is the DxOMark score.
This score is computed for a lowlight condition, so the sharpest lenses at wider aperture will be the best ranked.
The DxOMark team