High ISO comparison: Sigma sdQH (DNG) vs. dp1m @ ISO1600

Sigma sd Quattro H review (dpreview)
https://www.dpreview.com/reviews/sigma-sd-quattro-h

The DNG implementation seems to be poor and only usable at very low ISO:

Look at the difference between the sd Quattro H and the good old dp1 Merrill at ISO 1600:

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