Maybe not the correct place to link this but I didn't see it linked anywhere else....DPReview now has the 1DXIII in their comparison widget. So for now, I'd consider this resource the most accurate way of comparing the sensor to the 1DXII and other cameras. Be cautious of comparing sharpness between other cameras as lenses used are not the same. But you can compare sharpness between 1DXII/1DXIII (and a number of other Canon cameras) as they used the same lens.
