Both coins are popular in the market but two coins are different. I think, bitcoin is more important coin than Ethereum. The largest number of people of the crypto world use Bitcoin. The highest number of investment is also being made on Bitcoin. Its value is more than any other coin. Countries of the world are gradually permitting Bitcoin for transaction. So, considering all the factors, I think, Bitcoin is the best.
In terms of many factors, it is Bitcoin that is on the top or as what I am saying the King of all cryptos. Now, its potential to become a global currency is really there. However, Ethereum has also a great potential next to Bitcoin and there are also many users of this cryptocurrency. I would say that both are important and pivotal players in this expanding market.