Well at the first place its safer and you can also make more money, gambling is really based on luck and you can than also lose everything at once.
As such trading requires more luck than gambling friend because you have to rely on the developer to fulfill the promises he made during the ICO and if you are a btc price trader then you need luck to get the price of bitcoins higher and higher.
But yeah trading is a little better because with time it gives you knowledge but gambling gives just losses with time.