As long as you know what you are doing there isn't much difference. As long as you make money, it means your strategy works fine. I don't like to trade forex because I don't understand it. I can't come up with an educated guess no matter what strategy I follow. Trading bitcoin is easy. Buy buy buy till your stash gets big, and sell some when the price hits a new ATH. It is a no brainer strategy which you can't do with forex. I know some people make big money from forex trading but it is not my thing. Everybody should stick with what they understand best and it is crypto for me.
While forex trading comes with profits, but it's not for everyone. However, even in crypto trading, one who trades without prior knowledge and skills in crypto trading will never come out a successful one. But we all know everything can be learned. Crypto trading is quite easy for those who understand it well, and creates a profitable outcome if you submit to the basic rule when trading.