I do get your point and respect it, and you are correct in some respects. However I believe that this "picture graph" is showing where most people (men/women) lay with respect to cock/boob size. The picture graph is showing that 40% of all women have B cup boobs and 40% of all men have about 5.25" cocks and so on with regard to percentages. The pictures are just arbitrary, they are merely pictures to show you what that size looks like.
This picture graph may look like a novelty and without merit because of its "pornish" pictures but there is real truth behind the percentages within the graph.