I dont think so. In the end game Gold is still a precious metal and a beautiful thing in the eyes of a person. Bitcoin is a different story as it is a very good way to make transactions so as for the better currency the bitcoin would be best of two as for my opinion.
Wxactly they have different characteristics and uniqueness sow e shouldnt compare it with each other. Bitcoin cant replaced gold even it has a higher value as it is only exist in a virtual world. And aside from that bitcoin is much better when it comes to transaction but unlike gold it cant be touch and be used directly. Both gold and bitcoin is good to have so we must keep saving it.