Methinks me also smells some BS based on selective use of the variables. Color and b&w deliver an impression of sharpness in different manners,
and in either case it's contrast related. Even the concept of sharpness versus acutance can turn this game into nonsense if you are merely
crunching numbers. How you develop and print the film if a significant factor too. But overall, comparing apples to oranges is a waste of time.