I would say that's quite common confusion/mistake. I am not sure where it comes from ba I can assume that they just saw BTC going up and down for 3-5k and at the same time ETH is just shown the 200-300$ difference, that's definitely because of the difference of price. Maybe most of the people are under the illusion that ETH is the more stable cause of that fact, dunno, that's don't make any sense for me. I will vote for BTC in the middle of the night without any hesitations.