bitcoin will surpass gold if the price is very stable, when people have used bitcoin as a daily currency, but of course gold still exists in the future, for storing value as well as jewelry
For me bitcoin is much more important than gold because gold is just jewelry but bitcoin is surely the best investment, it will get better day by day, but gold has no important now in this era that it has been having in old ages, lets see when bitcoin removes the name of gold form best investment list but I am sure it will happen very soon.