ETH is nothing compared to BTC
It is not about comparing but it is about earning and not losing your investments. Lot of altcoins specially ETH have contributed for BTC huge price value increases because when the investors and most of all bounty participants received their tokens they will mostly sell it to received BTC for fiat. Therefore, BTC cannot just collect all the credits but it shall give respect to the altcoins. Now ETH is ATH of $650, it will be very fortunate to those holders because maybe this will be the start of ETH to arise.
yes i also believe ETH will have more use than BTC someday, and that will be the reason for the continued rise in prices as of now there are many developers make a ethereum contract token and before you can send that token you need to have ETH for gas in that case it will also help to increase the price of ETH .
I also agree that in the near future ETH can rise up close to bitcoin. With the use of ETH, anyone can transact in most of exchangers. With this, BTC in most exchanges is transferred and converted via GAS, which is based on ETH. Maybe in the near future no one would want to use too much ETH just for converting bitcoin, so instead of many conversions, there would be a direct conversion of fiats to ETH and vice versa, allowing the use of ETH at its maximum advantage. Less loss of eth due to transaction fee, which in later scenario, many would be glad to get their fiat with a low deduction starting from a exchanger.