Excellent question.

The answer is that "real gold" has a long, long history as a stable store of value and as a result, more people know it, trust it and are willing to buy it when the chips hit the fan.

Here is a chart showing the price of gold over the past decade.

https://goldprice.org/gold-price-history.html

Here is a corresponding chart for bitcoin.

https://charts.bitbo.io/price/

But I would argue that the most important and telling part is what has ocurred recently, after a crypto fan assumed personal control over the world's largest economy.

You don't just want the best investment, you want several good investments that are uncorrelated with each other. Gold is better if you're looking for something to diversify your investments in the stock market, since it tends to do well when stocks are doing badly (though that's not guaranteed). Bitcoin of course has been better for really high returns, mostly when stocks are doing well. Whether that will continue is anyone's guess. Long-term returns for gold have basically matched the S&P500 total performance since the bottom of the dotcom crash.

Because they're not actually equivalents. Gold has unique properties as a material, unique properties that are useful. It'd be more widely used in industry if it wasn't such a scarce and expensive material. Bitcoin on the other hand, has no use other than for conducting trade. Because of this, they inherently carry different risks as an asset.

You can use gold in tangible ways.

Because when you buy gold you don’t have to rely on shady crypto bros to cash out