Sony A7rIV versus A7rIII Dynamic Range

Bill Claff  from PhotonsToPhotos measured the  A7rIV dynamic range. He writes:

Slightly behind the ILCE-7RM3 at higher ISO settings.
I don’t think that’s a big deal given the higher resolution.

I  think  this is a great  result if you think the new A7rIV has 50% more resolution. UPDATE: Bill Claff told me the A7rIV  have been normalized to a consistent viewing condition

Sony A7rIV and new accessories:
Sony A7rIV in USA/CA at BHphoto, Adorama, FocusCamera, Amazon, BuyDig, Henrys.
Sony A7rIV in EU at Calumet DE, ParkUK, WexUK, Calumet NL.
Sony A7rIV in Asia at Sony Japan. Sony Australia.
Sony VG-C4EM grip in USA at BHphoto, Adorama, Amazon, FocusCamera, BuyDig, ParkUK, WexUK.
ECM-B1M Digital Audio Shotgun Microphone at BHphoto, Adorama, Amazon, FocusCamera, BuyDig, Park UK.
XLR-K3M Mic at BHphoto, Adorama, Amazon, FocusCamera, BuyDig, Park UK.