Your question and answer directly relates to your other post.
The files and fragments figures that you are looking at relate only to files.
When you defragment the "whole disk" as you are doing in this circumstance you are actually performing more than defragmentation. You are also moving data from the inside areas of the disk to the outside areas of the disk.
This is called "optimization" of the disk. Some logical decisions are also involved in this data movememnt.
Defraggler will have more and more "optimization" options and processes added as it evolves.