Just because one is stronger than the other does not give him or her the right to hurt the other. Women can use weapons effectively to hurt a man, despite his size. As a result, their victims often end up in a hospital emergency room. When a man enters a hospital with bruises all over his body, it is assumed that he attained those bruises while at work or possibly while fighting with another man. It is rarely assumed that these bruises are caused by spousal abuse, and even more rarely are men asked if the bruises are the result of mistreatment.
Healthcare workers tend to look more into bruises that are found on women than bruises found on men.
Many times, men will lie or make excuses about how they attained a bruise or laceration because they do not want to admit they're being abuse by a spouse or girlfriend. Much of the mental health community is in denial of male victimization. Men are more rarely asked how they deal with their anger, than women. It is just assumed that men lose their temper more than women, and they do that through physical aggression. The idea of a male aggressor is more believable.