I don't agree that rape is only about power and not about sex. If that were true, why would forcible sexual intercourse or other sexual acts be a part of it? Why would not the attackers merely beat up the woman instead of abuse her sexually, if it were only about "power?"

It seems to me that rape is, indeed, about sex. Which makes it even more horrible if you ask me.

I find the song's lyrics a bit unsubtle and manipulative for my tastes (just my personal taste in songs, doesn't mean it's a bad song), but certainly the topic is an important one to be communicated.