People ask around the space how better wold perform the Canon 5D MK II against the 1D MK III in similar lighting situation and at high ISO.
I did this out of the box (for the 5D MK II) test at ISO 6400 on both cameras: 5D MK II and 1D MK III.
Remember that when ISO 6400 is “native” for the 5D MK II it is “boosted” in the 1D MK III.
Put the crop factor aside, these shots have been taken in P mode, JPEG, ISO 6400 and straight out of both cameras.
Place to the pixels.