Recuva notes the "state" of the files able to recover. I noted, that for USB-sticks or memory cards this state is always described as "excellent", while this is definitely not the case. Other file recovery programs show for the same USB-stick or memory card overwritten files, and are right.
Apparently wrong statements appear also sometimes on the standard hard disks - again other programs seem to be more reliable in checking the status.
It is probably a point to be considered in the further development!