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?
Yes it is true so if you will going to compare bitcoin and BCH definitely there is only a little difference and it is known to us also that BCH could not do better than bitcoin because BCH is just a fork for bitcoin. For now BCH could had landed to a good rank on the coinmarketcap.com rank list based on the marketcap volume. You will there that Bitcoin is number and the others are being left behind in terms of market cap volume.
well, I guess that's a sure thing. bitcoin is of course the best cryptocurrency for now, even bitcoin cash follows the bitcoin. most of altcoin follows bitcoin as a role model, therefore bitcoin is better than others.
Indeed a good brief explaination and distinguish the role of BCH and of Bitcoin.