A+ and Net+ certified technician when I graduated high school, studied a fair bit and used to work in the IT field for a short time....though I admit I'm not 100% up-to-date on the newer hardware.
The only defrag I really trust is the one that comes pre-loaded with Windows. But thats just me. There really isn't a difference between one defrag program and the next... they're all the same, all operating in very similar fashions. There is no possible way that any defrag program can "miss" a fragmented file...its unheard of to be honest. As long as all files are contiguous, the drive is defragmented. Its also impossible to miss a non-contiguous file, due to the way a harddrive works.
I dunno what that program is telling you, but my bs sniffer is sniffin some pretty hefty piles.
I'm sure the program is working as advertised and intended, but its highly unlikely that it is more efficient than any other defragmenter.
Again, not trying to diss you or the program. Just wanting to help you understand some things.
(keep in mind though, this is not like mechanics...the same rule does not apply to everything. For instance, Anti-Virus and Anti-Spyware programs can vary significantly in useability, efficiency, and overall thoroughness. However, this rule does not apply to defragmenters.)