For 13 to be unlucky would require there to be some kind of cosmic intelligence that counts things that humans count and that also makes certain things happen on certain dates or in certain places according to whether the number 13 'is involved' or not (whatever 'is involved' might mean).
I've had some amazing people in my life. Look at my father - he came from a small fishing village of five hundred people and at six foot four with giant ears and a kind of very odd expression thought he could be a movie star. So go figure you know?