I think we're just interpreting it in different ways to be honest. It shows what a difficult subject this is and whether we like to admit it most of us do see rape as a hierarchy of abuse.
Violent stranger rape where a victim is dragged of the street, phsically threatened. (Everyone sees this as rape)
Violent rape by someone you know.
(Everyone sees this as rape)
Rape where someone knowingly drugs a woman to have sex with her.
(Everyone sees this as rape)
Rape in a relationship where the man has already ground his partner down and she is unable to say no and he is aware of this.
(Some people think, well why didnt she leave)
Then there is rape where a woman has gotten drunk and 'puts herself in a situation' where a man takes advantage (here she is labled a slut by some people)
A man and woman who are in an otherwise loving relationship where consensual sex does occur where a man sometimes has sex with his partner even though she isn't in the mood through pressure or guilt or by not reading the signs.
(Some people view this as normal and to be expected in a relationship).
The last two are almost impossible to prove so if more work is done on educating people that this is rape or sexual coersion than less people will be likely to do it and more people would realise that this is not ok.