Both of this two are the best investment. Still, for a more long term investment I think gold was the more substantial since gold is undoubtedly going to give you profit for a long term investment in the market,
this discussion was already discussed in the past years and as we all know we don't know if bitcoin was still around after 10 or 20 years but for sure gold would always be around. The supply was limited since it was a natural resource surely gold was better in long term investment. It depends on the situation in what was the most profitable.