I think this is a complicated issue, for example, an abusive man who grabs his partner and holds her down and shouts at her but doesn't bruise or leave any physical evidence on his partner could cite a lack of sufficient evidence, and that's not good for the victim, but then again, you could have a woman who lies to the police after having an argument with her partner, and if they live in the same house, it could be problematic for an innocent man...
I fucking hate humanity...