gradinterviewthrowaway

I've been invited to interview at one of my top choices. In general I think that the acceptance rate post-interview is about 50-60%. However, my POI mentioned that only 3 people in my area are being invited to interview this year. I know that overanalyzing is bad but I can't help it...do you guys think this means I have a pretty good chance? I mean, if we are all accepted, they can't expect all of us to enroll and I'm sure they want at least 1 or 2 new students in this area. What do you guys think?