I believe that bitcoin cash is just a speculative coin. The difference between the data and the crypto currency is that bitcoin has a block size of 1 mb, and bitcoin cash has increased the block size to 8 mb. However, this does not solve the problem with the bandwidth of the network. Therefore, I believe that bitcoin is better, as a symbol of crypto currency, that it was the first.
All coins are speculative, users by and sell them hoping to make money that is all. Doing it at the right time will bring profit, otherwise it will be a loss.
Correct use the market fluctuation advantage and make a profit if you put a sentiment on any coin you will never make any profit. Actually investors are not buying crypto to use it in real time they buy to trade means they want to make money that's it. So for them BTC is also ok BCH is also ok end of the day they want profit.