I do not think that you can even really compare them with each other, they are both very different the gold one is physical and the bitcoin is digital and has another target too, I think we cannot compare them..
Besides having different goals or targets they are totally different in terms of security and profits etc, bitcoin is more profitable in long run while gold is more secure if you save in it because the price of bitcoin can also drop drastically while gold can stay stable for a long time.
Yes, that's right. Bitcoin is more profitable in the long run but gold is going to lift you from the dust if it ever comes to worst.
Technology, the internet, bitcoin, and other cryptocurrencies can be erased, but gold will be still gold.