I think that the main difference between the 2 currencies is that - ETH is a currency that can be inflated and more and more ETH will flow to the market while BTC has 16.4 millions created and in the future there will be 21 millions with no possibility to create more
Yes thats the problem with Bitcoin but recently Ethereum has been running out of gas power so there is still not a surity that Bitcoin is going to get overturned @yacov