Bitcoin is the King of the Crypto for now and there seems to be no candidate qualified to replace it on its throne. There can be in the far future as we don't know the things that can be so I am leaving that for others to imagine. BitcoinCash (BCH) is just another altcoin and being just a clone of Bitcoin it is experiencing some identity crisis right from the start it made its debut to the whole world. I don't agree that it can be the dominant altcoin as there are many others who are also qualified for that title and position. But then let's see what can really happen.