Peter: Ah, large format, not medium, my mistake.
And if you read my post properly, you will notice I said they WEREN'T your run-off-the-mill camera, they're a whole special sort of camera :D Most digital cameras, on the other hand, are more closely compared to 35mm cameras (which the 'blad isn't). Therefore would be rather difficult to "compare" them as far as resolution goes, to a digital camera... It would really depend on the digital backing plate used with the camera.