Now a days, new altcoins that promises to surpass existing ones appears quite frequently, but in reality they only aspire to complement the shortcomings of the leaders without ever aspiring to displace them.

Admittedly, there are altcoins that at least theoretically are technically superior to bitcoin and ethereum (the two heavyweights of the market), but the market of cryptos is very unique and seems to value much the antiquity and the accumulated prestige before its technical deficiencies.

I think that Cardano's greatest aspiration would be to displace NEO, but never to ethereum.
The real king of cryptospace