Picked A for most, except for one or two of the close-ups of the kid. To my eye, the B photos mostly looked dull, washed out, and less sharp.
Given the MR set up, I, too, expected A to be Samsung.
Do wish Apple would go for greater zoom than more ultrawide as it has been doing. I still use a number of digital cameras because that's the only to get good bird, deer, and other animal life photos.
P.S. Oh, and I agree 100% that presenting this as a blind test was a superb approach! Next time, it might be fun to wait a few days before announcing which camera was which so that our discussion would get into the nature of the photos themselves even more.
Including a couple of older models in the comparison might be revealing, too!
P.S.S. Not sure why my postscript added via an edit looks like a much smaller font size!