Zeiss touit 12mm and Sel 20mm same score of 17 ... but completly differents conclusions :
Sel 20mm : "Optically it’s far from perfect" ... "A sharpness score of 10 P-Mpix is disappointingly low for lens tested on 24-megapixel sensor like the Sony NEX-7 and slight barrel distortion is noticeable"
Zeiss Touit 12mm : "The two new Touits from ZEISS live up to our expectations. While we’re unable to test these lenses on Fujifilm X-Series cameras currently, the results are likely to be very similar. On the Sony NEX-7, both lenses are very good indeed, excellent even, ..."
And from my point of view has i have both, there is nothing to compare in quality terms between this 2 lenses.
My conclusion : DXO MARK SCORE IS A JOKE !!