To reach the conclusion whether Ethereum can beat Bitcoin, we first have to look at the current market position and the degree of utility of both coins.
Bitcoin is clearly market leader right now. It worth 70 times more than ETH. When it comes to utility, it is accepted by many online stores. Easily speaking, Bitcoin is most-widely used cryptocurrency at the moment.
Whereas Ethereum's market condition is worsening. It has dropped over 90% in last 19 months. When it comes to utility, it is mostly used to create tokens. There is hardly any real use of ETH coin in its own.
If we compare above, we can easily reach to conclusion that Bitcoin will remain the king until some new cryptocurrency comes in the market, offering entirely different set of utility.