Ethereum cannot maneuver bitcoin easily. Bitcoin holds 50% of the market cap and ethereum did not though it was the second largest cryptocurrency. The popularity also of bitcoin than ethereum helps to boost its price.
A lot of speculations I've observed telling that ethereum will dethrone bitcoin but up to now, ethereum is just in the second place.
Yes, I concord with you even rhetorically some people mistake bitcoin with other Crypto, if you ask them about any other coin their response lies on bitcoin, but in terms of fast transactions and security purposes with bloom ICO ether is more materialistic than bitcoin and if ether could continue its mode of operation there is a tendency of ether surpassing bitcoin but for now bitcoin is still the best cryptocurrency.