As for me I was thinking about this to and from what I see Ether is performing way much better than Bitcoin, Because everybody see bitcoin and lose their trust in it, and here we have our Ethereum, which is much better and more fresh.
The cryptocurrency market as whole is psychologically entwined with Bitcoin. When Bitcoin plummets, the market plummets, although weve seen signs of change in the last few weeks. In 2018, I predict that Ethereum (or another platform) will surpass Bitcoin