I won't bother you with the details of what I do for a living... all i will say is that Fotoforensic is no where near accurate enough for it to be used in anything other than as a case support for something that has already been deemed original or altered by other means.  It is far too limited in what it can do and too inconsistent.  It can easily be tricked and sometimes original images comeout like a total hackjob after analysis as well.