Bitcoin Cash is a temporary alternative, never going to replace Bitcoin as a pioneer of cryptocurrency. The problem is a lot of transactions that are pending and unconfirmed, it's because the act of a deliberate person to spam the transaction, can be seen in block explorer many transactions 0 btc.
Delibirate or not. It has to deal with this kind of behaviour. In the real world there are a lot more transactions even without spam attacks on the Bitcoin network