The runway was long enough to land a 737 without any problems or indeed without maximum braking. It was long enough to take off again later, albeit not heavily loaded because a failure at V1 would have been interesting.
If it was too short they would have almost certainly have noticed and not landed. Every pilot comes with a pair of Mk1 eyeballs.
There is absolutely no excuse for invoking luck, gods, devine intervention, good karma or any other such superstious flimflam. Superstition has no place at the pointy end of an aircraft.