Ethereum will act as the king of altcoins in following years. It has been growing steady and stably since March this year. When i see someone compare an altcoin with ETH and claim that it will defeat ETH in near future i just laugh because it's a stupid comparison to shill a coin.
There is no altcoin that can compare to Ethereum because this coin always has a very important position in the market. There used to be a lot of coins like BNB, NEO, EOS compared to Ethereum but in the end there was not any victory for these coins. For me, Ethereum will always be the king of altcoin and any comparisons will be lame.