Cardano is one of the altcoins that has great potential in the future, even though Cardano is currently experiencing a decline, I think Cardano can develop even better in the future, but when compared to ethereum Cardano is still far from good in terms of ratio, popularity, as well as the level of potential growth in the future, I think ethereum is superior, until now there has not been a single altcoin that can match ethereum's achievements other than bitcoin.