Whatever the arguments of those who consider ethereum will be replaced, but I am very sure that ethereum will definitely succeed as the best coin after these bitcoins and waves can also succeed but will remain under ethereum
What good in the Waves? I don't know what wrong. But today Waves seems like speculation coin with some development. They have some meetups, marketing, development points. But as the whole Waves will never be like ETH. it not looks solid. This is my opinion only. But I feel so.