It all comes down to stability when you have to consider a real safe haven. Yes, over a cherry picked period ...Bitcoin might have looked like a better safe-haven, but on average the Gold price was more stable. The extreme volatility with Bitcoin scare investors off when they have to decide what investment option is the best for them.
If you want to use Bitcoin as a safe-haven, then you might be in for the long haul... because you have to get in at a low price and then ignore the volatility, until you want to sell at a higher price in the future.