Thanks for your interest in DxOMark.
Sensor results for the RX1R at low ISO setting were check many times. We do not have the explanation but the sample we got had a lower dynamic than the previous RX1.
We will try to perform new tests on another sample to comfirm it, stay tuned.
The DxOMark team
I was also surprised - a lot - and have asked at fora, but nobody can answer this ?
Can You say anything about when you will do it ?