It's not make sense to compare return between Bitcoin and gold because the answer is already obvious, Bitcoin will win.
Gold could able to beat Bitcoin if you only count for a year long, during bearish season and war happened on popular countries, gold has a good chance to beat Bitcoin.
Of course the upside is btc goes up 10x in next 10 years. A very powerful incentive to want more of it now.
Too big expectation I think, the highest I expect would be 2
2 aka 4x
I'm not seeing people who invest in gold shift to Bitcoin for long term, they like to invest in both.