Bitcoin is on a downtrend, but Gold is about to collapse. So Bitcoin for now, the potential upsides are huge.
how is gold about to collapse? Gold has a lot of uses besides being used as a hoarder currency.
You should take a look at gold charts and the markets in general then, the situation is not good.
Gold has been on a rise for too much without a serious correction, and in good part because of banks manipulating it and right now the US plans on the dollar have changed bringing new strenght to the currency, thus affecting stocks and commodities. We could see a "Black Monday" (or maybe two if you want to be pessimistic) soon enough.