It is understandable why gold is compared to Bitcoin and do it mainly because there is a limited gold reserve on the planet as well as a certain amount of Bitcoin. Of course Bitcoin Gold is a good investment, only in the case of Bitcoin it is a long-term investment unlike gold that can generate revenue all the time. But I would choose gold because of the fact that with him you feel more confident.
With gold you will feel more confident but you will not be able to earn faster money if you will choose gold instead of bitcoin or if you will choose gold for half of your money and bitcoin for half of other then you will even at that time lose the profit from that half as the price of gold do not increase that much faster like bitcoin.
Good point about the feeling of security when it comes to holding gold because as we all know it, gold is proven and tested as a good investment. Unlike bitcoins where it is like a one day millionaire and easy go lucky investment because you can't really predict where it goes and if it goes up, it goes fast. I mean, the profit is really very high with bitcoins and at the same time you feel the internal concern that it might crash at anytime.