How many times do I need to say this: The size of a typical fine particle remains much the same regardless of grinder or grind fineness (although it could vary by coffee), it is a fragment that gets thrown off whenever a bean is broken. The coarse particles change in size depending how often they are broken. Since more fines are generated each time a bean is broken, the finer the coarse particles, the more fine particles, and the higher their proportion by weight.

This is a completely predictable relation, since it depends only on the fact that something brittle is being broken; we knew about it before we started, and it is unfortunately the only regular relation we found.