Indeed the trading done in the crypto world is the same as that of the real stock exchange. The only difference is that one is centralised and the other is decentralised. In the stock exchange there are versatile amount of external factors which defines the ultimate fate of the commodity and its price in the market There is also control of the government on how to set the prices for its own benefits. In the crypto trading we are responsible for the prices and we can just earn as much as we could if everyone is focusing on the one currency since long. For example, bitcoin! :-)
In the crypto trade you also follow the same procedure as you would with the stock exchange for buying the assets and then selling them at the higher rates. So what changes is the controlling body and nothing else. So yeah more or less they are the same thing.