Currently, ETHBTC has turned . daily is coming down to 50; about to get into oversold zone, but not yet ---> this is usually the time when the hardest falls take place: between entering the oversold zone & touching 0.
We also see decreasing .
My guess would therefore be that ETH will take the correction before attempting to "flip" BTC around mid-2018.
Originally, I was more optimistic about the future of ETH. Having compared it & its momentum to other up & coming projects, esp . NEO & EOS, I think for ETH to go too much higher than BTC market cap-wise is very hard. Even the flip may be short-lived.
This means ETH will remain a good hold of value but not a high potential investment.