Yes I agree that Bitcoin is the king and Ethereum is the queen, because this two are the most popular and leading coins in the market. The other coins represents as the common people live in the community that some has no value in crypto palace.
Both play a decisive role in Cryptocurrency and all of the remaining altcoins are just children, which in turn determines that ETH, BTC has the greatest influence without which any coin can compete. If you are a new investor then you will definitely tend to invest in ETH much because the current price of ETH is very cheap and can definitely increase in the next few years.