maybe it's because if you choose the top 5 coins in the crypto market within 2 months you can get a double profit, because the top 5 coins are great for a big profit
Not like that,even the coin with less than 100 rank or coinmarket cap value can do that,we just need a coin with more volatility range to find the douple profits.FOr that use CMC to find which coin has great volatility in the last week period of time.