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.
It might be possible to be second most interesting coin besides bitcoin. Eth price is still far lower than bitcoin but this lower price can invite more and more investors to invest in it. Why, because investment gains of eth recently was higher than bitcoin. Bitcoin price today is still high or expensive at the current price of $8,500 this week. There is a a good opportunity for eth to grow more this year following the popularity of bitcoin at least up to the end of this year.