For me, Ethereum doesn't really need to prove itself as the best coin than other coins. Why I said above that this is the time for ETH to prove itself, because so many people compare ETH with other Altcoins.
I think it's clear.
In the past ETH has proven itself to be the best among other Altcoins and now there is no need to do that anymore, because simply by making good developments it will become even stronger over time.