anyday anytime i will prefer bitcoin , all crypto market depend on its movement .
see this example - if ripple falls to 0.20$ or 0.10$ then only ripple holders will be affected , and other altcoins will not be affected at all .
but if btc movement go down then entire market will go down and that is sure thing ..
so it shows why btc is called king of crypto .
You are assuming that no other coin will take over BTC role of top marketcap. That could easily change if a downward trend in BTC continues. Etehreum and XRP are not that far behind.