Ummm no it's not, evidence is defined in court as either two things. Physical or circumstantial. What you are saying is the victim(s) made a statement to the police or investigators and that's all it is, a statement. It's incumbent upon the investigators at this point to follow the lead(s). Whether that leads to physical (actual) evidence or if enough witnesses can corroborate a certain individual or party were there through individual testimony ( which would result in circumstantial evidence) would appease the the court from the prosecution as evidence.
In no way ever is a statement taken used as evidence, it's just a statement.
If your wife, girlfriend, partner said in court you came home and beat them or tied them up whatever then the prosecution has to prove it happened either by physical evidence or through circumstantial(meaning you have to place the perpetrator and victim at the same time although not witnessed or maybe witnessed because they were there at the same time and heard noises of a struggle or screaming or whatever). If you are following what I'm laying out then it's a textbook case for court depending on whether or not there is enough evidence to prosecute the case and bringnot to trial. That's really the bottom line and as far as the video link I watched I would advise the lady who from five years ago whit her claim find a new attorney. Now I'm just a tax attorney so take that for what it's worth but judges hate counsel that can't speak in complete sentences. My bet is Keysor is in the legal system somewhere and like me works on absolutes.