Today the price of ethereum and bitcoin cash has come close in value. By now the value of ethereum is $122.23 and Bitcoin Cash is found $122.61, and will the price of bitcoin cash fall further providing path for users to make a large scale investment on bitcoin cash moving from ethereum.
It is just a coincidence. BCH is rarer and it used to have a higher price, but it got split as BSV took a piece of the cake. Bitcoin Cash has been pretty silent these past few months with the exception of Roger Ver doing his magic in Japan and Korea. Ethereum however - Constantinople is coming earlier than expected, no wonder it outperformed most of its competitors.