Altcoins are better than bitcoin in terms of profitability. But the advantage of bitcoin is that it is more profitable to store funds for a long time.
I dont think so that there is any such way because of which we can make a comparison in between bitcoin and that of altcoin as bitcoin is far better than that of the altcoins and that altcoins cannot even compete with bitcoin in anyway. There are so many investors who are busy in investing of their money into bitcoin and that they trust bitcoin more than any other coin in the world.