A really interesting thread, but I don't know the answer.
Astounded when I first saw the quality of Avatar on the 7-55, so as any decent human being would do I went out and bought the Samsung 55" panel with Freeview HD and 4 x 1.4 HDMI, 3D CAPABILITY via compatible player and so on. £2300 seemed great value through the trade!
Stated specs for this are 200hz Motion Plus, so maybe Samsung have added some electronic processing which B&O have not. When I get back from a short break I will check to see whether Motion Plus can be turned off on the Samsung, and if so what the refresh rate is when it is off. I would be very surprised if you can do anything with the B&O product without meddling in the Service Menu.