I suppose ETH could've been even better for Bitcoin with some kinds of integrations or something instead of issuing a new token. At this point though it feels as if Ethereum has the network effect (or at least mindshare) for the smart contracts ecosystem. It's getting bigger everyday and it's starting to look like Bitcoin in relation to other altcoins when compared to other smart contracts projects. I personally have no investment in Ethereum so I don't mind either way.