Nobody can tell you what a gold oz. worth of wheat is without resorting to exchange rates of gold to actual currencies.
Yet this value is a small fraction of gold's trading price. How do you explain the current price of gold?
For gold, perhaps 20% of its value is its actual use and 80% is for the scarcity. For bitcoin it's 0% for actual use and 100% of the price is its scarcity.
When you look at it like this, the difference between gold and bitcoin is not nearly as dramatic.