I agree with you on this, altcoins are more profitable than bitcoin base on the fact that bitcoin doesn't move so fast like altcoins that can turn 100% within 24hrs
For altcoins to increase to 100% within 24 hours, I believe that they are shitcoins and you will definitely lose money if you invest in them. Investing in altcoins is a risky investment option because the price could collapse anytime soon, current investors are a lot more careful than before and safety is the first choice.
May be some altcoins are more risky platform, because of low marketcap altcoins. Normally huge investor buy some low scale altcoins surely it will rise more than 100% and drop simultaneously at anytime. My suggestion top 50 altcoins are have huge marketcap so it is hard rise more than 10% at anytime. Nowadays good growing altcoins are available in the market so better invest right project, we make enough profit on altcoins.