We've been measuring crime severity and the public's perception of it for over 50 years, and every study that's ever been done on this topic shows that we consider crimes against women to be considerably more severe than the same crimes visited on men. In most studies, the ratings nearly double, and in some studies we even find that crimes against women rank even higher than the same crime against a child or a senior citizen.

Example: In the 1985 Wolfgang study, they found that the same crime (stabbing), showed a 35 severity rating if it was a husband stabbing his wife, a 29 rating if it was an unidentified person stabbing another unidentified person, and only a 19 when it was a woman stabbing her husband.
That's not a bias against women, that's a bias FOR women, one of many examples of the Women are Wonderful effect you see all over social science.

So is the problem 'nice guys' are slipping through the net, or that we are falling all over ourselves in a fully blown rape panic?