I think most people accept that there are different degrees of crime. There is the shoplifter who steals a few items from a supermarket and then there is an accountant who defrauds his clients of thousands of pounds. With violent crime, there is, for instance, a punch that knocks out a tooth, a punch that results in death because the victim hits/his her head on a kerb, or a dousing with acid which destroys a face.
Why is rape seen so differently? Of course, any rape is a violation, is likely to cause a degree of trauma and should be treated very seriously. But a rape that, for instance, damages internal organs irreperably or, because of the level of violence, causes severe and longstanding psychological trauma that profoundly affects living a normal life, I would consider warrants a longer sentence.
I've always quite liked Germaine Green even though she makes some outrageous statements sometimes. However, I agree that now she is coming across as someone who is being outrageous in order to try and regain media attention.