If we compare the crypto assets market to the stocks markets in general, can Bitcoin be considerated as the equivalent of the dollar?
In the stock exchage we buy shares with dollars.
In the cryptocurrencies exchanges we buy tokens or coins with bitcoins(and other cryptocurrencies, Litecoins, etc).
Every currency differs, so does the virtual and real currency. Both has a value yet will always differ. So saying something could have been equivalent is like saying they are taking the same economical state. This could rarely happen but not all the time. Dollars and bitcoins are two different currencies with different values.