The difference and what a lot of people seem to miss is the scarcity of bitcoin and the fact that its makers and followers are bootstrapping a new global economy. Having only $1B in liquidity is not enough to participate in all global markets. If bitcoin successfully acquires fractions of all global markets, there is but only one direction the exchange rate can go, and that is up until there are hundreds of billions of dollar value in bitcoin. Divide that by the 11 million bitcoins in current circulation, and each one will be worth thousands and thousands of dollars.