Well bitcoin market cap is $18,948,047,807 and here are 1.2 trillion USD ($1,200,000,000,000) in circulation, so they are missing some zeros

, but Bitcoin has larger market cap than many national currencies

Yes that's for real that bitcoin has larger market cap and it's more valuable for us other than other local currencies. Also in investments with bitcoin, if you are going to hold bitcoin you are already into chance of getting profit when it increased it's price. But in USD it can be eaten by inflation if you are going to keep on holding it.