Still, we are comparing the values of two giants which belong to completely different areas.
Bitcoin is a digital token (not a currency in my views) that helps to securely, safely and speedily transact our money from one end to the other without the interference of any third party (except blockchain) and that's why it is being appreciated by everyone whereas Gold, that used to be the most traditional investment of all time will still remain in the game always because it is physically available and under specific concerns, remains the first choice of every investor yet. But I believe Bitcoin won't be taking several hundreds of years to surpass Gold's total market cap.