BlackMagic pocket 4k cinema camera - Dynamic Range (Latitude) evaluation

I'm a DR nuthead. I believe DR is 90% of what makes nicer cameras look nicer. And I was excited to see if my new p4k would improve the DR over my old Sonys (with the RX100IV being the only one I keep anymore for video).
So I did a quick test and... it went awful, with the RX100IV beating the p4k by about one stop. So I went ballistic and well, let's say I overdid this a little bit. I spent over a day doing not much else besides trying to measure dynamic range. Spoiler: it went well.
This video that you see here is just a few of the clips I shot. If you want to read my full conclusions, I posted them here:
www.bmcuser.com...

[@DjShandeZ]

Hi There, This may be a basic question but I didn't really see it in your full conclusions test. How did you change the stops down? did you change aperture or shutter speed? I'm guessing you did something like that to keep the ISO locked at what it is? or is there a setting in the camera that you're changing. Thank you for any help!