I think that there are similarities and differences between children and adults in abusive situations.
I think the key is that anyone being abused may feel powerless, and believe they are powerless. Whether it's true or not, it's reality for them.
Do people who have been victims ever manipulate others by playing the victim? Of course. Sometimes they have learned to do this because it has been the only way they can achieve any control in their lives.
Learning that they do have power, and don't need to do this behavior, can be incredibly difficult.
Victims don't get a free pass on bad behavior - I know I'm responsible for how I act now. BUT I also know that there are reasons my behavior is sometimes undesirable. I appreciate some understanding from others while I work on being better.