I have some doubts on that benchmark:
GeForce GTX 1070 33.05 Mh/s ethash 1493Mhz 4608MHz 96W Win. (EthControl) 388.13 PM 4.1c - ETH
I'm running with:
60% power, -150 core clock and +780 mem clock and I have around 32.5 - 32.8 ... depends..and the power is about ~ 100 W / card
Ok, I know there is no additional info regarding card brand and other settings but it's quite strange, I run the cards higher and I don't get over 33 Mh/s

Regards and have a nice weekend!