I dont think that it will happen in the near future. Look at the price of both currencies, there is big difference. So, etherium will grow, but not so fast and not so high.
Its a good idea to invest your funds into all of them. All those currencies are different and I dare to think that they are promissing according to the backing.
No wonder. In my opinion it will rise up,but i think not so rapidly. Bitcoin has become too expensive and ETH is still rising up gradualy. So there is a big chance that many traders will invest into this currency.
Now its high time to buy bitcoin. It has proved its value, but before doing that, analyze the history market to buy at the lower price for the moment. Good luck.
I would say that all life is a bubble. While this bubble grows, make use of it. Many people invest into cryptocurrency now instead of bank system, that is why I think the wall street guy explains and warns the public of that. On the other side one should be careful with any investments.