One article about DXO (although related to phones), and they mention this:
"DxO Labs is first and foremost a consultancy. Their business model is based upon being paid to conduct analysis and optimization of imaging system performance
by the companies that make those systems. DxO is not an independent journalistic entity or trade organization - it is a for-profit software consultancy for camera makers."
Maybe It's Time To Stop Letting DxOMark Decide Whose Smartphone Camera Is "Best" (Opinion)
Not to say the 850's sensor is bad or anything, but I don't really put much faith in DxO. Instead of a bunch of charts, I would rather see images from the 850 and its competitors, side-by-side, and judge them for myself.