True, about the difference.
However the point that the American pilot was making was that he was plugging the hole in that piece of the Swiss cheese so he did not have to worry about an accident at HKG that night.
I still believe he was right, and I still believe that even on a CAVOK day a purely visual approach should not be done by Heavies or Supers in this day and age. It adds a level of risk that is avoidable, irrespective of the skill level of the pilot.
Maybe I'm becoming a dinosaur.