The focus point information is in a proprietary Manufacturers Notes field. This field has sub structures that can be different for each manufacturer. For this reason, there is no standard parsing or even a standard size for the Manufacturers Notes field. IOW, it could be a different data type and different position for each manfacturer. DPP can display it for canon and Nikon Software can do the same for Nikon. As a general rule though, Adobe does not parse the Manufacturers Notes field for any camera model.