I think eth has much greater potential than bitcoin, because I think bitcoin does not have an important value, bitcoin is just the first digital coin and very well known to the public, while etherium is altcoin which has smart contract payment system so it is very useful for new ico
yes definitely ethereum has greater potential than bitcoin but bitcoin grows much more than the altcoin on the market and they just follow bitcoin but ethereum is much useful the erc20 makes alot of good coins and there are alot of erc20 tokens on top 100.