Let's look at the definition of victim:
A person or living creature destroyed by, or suffering grievous injury from another, from fortune or from accident
Obviously, anyone who has ever been raped, has been a victim. You have been harmed by someone, sometimes someone you trusted, and you are suffering. Sometimes silently, sometimes out in the open.
If you get past the hurt and the pain, move forward, and let the past stay in the past, does that not make you a survivor? You're outliving the event. You are one who survives. You are following the definition of survive, which is:
To remain alive or in existence. To live or persist through.
In my not so humble opinion, everyone who has been raped is both a victim and a survivor. Its just a matter of deciding which aspect of the aftermath to focus on. YMMV.
Personally, I consider myself a survivor.