We don't know what CCleaner deleted (if anything).
You are also making an assumption that Piriform is more competent than Microsoft. We don't know what Microsoft Disk Cleanup deletes. We don't really know what TFC deletes.
I think @OldMike65 might be right (MS reads the folder description rather than the contents). But this is based on what? Again an assertion.
I have to say though, sorry guys, I can't get into looking around for 100MB that is incorrectly reported.
Either you know where it is "(C:\<some>\<path>\Temp\MS forgot me") or not.
No picture? Don't know what path has been cleared out?
It doesn't exist then.