In my opinion, BTC still dominates over ETH because of its large consumer/investor base which originates from it being the first crypto coin and people like it also because there's nothing else succeeding it.
Yes BTC is currently the most superior as well as the most valuable coin in today's market as will remain so by the end of this year based on market result as ETH and NEO are very good competitors to each other but they are not in the league of bitcoin as it's the most famous investors choice of cryptocurrency .