In my experience bitcoin cash is a fork of bitcoin even BCH is faster and cheaper to use due to larger blocks but still it'a seen that most of the people are using BTC than BCH so why is bitcoin doing better than bitcoin cash?
As we already know that the prices and also the thing that make bitcoin doing better are depending on the community. Bitcoin has so many community rather than bitcoin cash itself. So thats why bitcoin more popular rather than the other coins. Also, it makes it doing great comparing with the other coins.