So we see that something like a real fight between Bitcoin and Bitcoin cash has started. While BTC fell and go on falling, Bitcoin Cash has shown a fantastic growth!
Does it mean that there is a possibility altcoin will be the winner?
There are coins with higher chances to beat Bitcoin than Bitcoin Cash. Bitcoin however, is the father, it's kinda hard to replace that.
Agreed. Bitcoin is the foundation stone of all cryptocurrencies so it's never gonna vanish, only if the whole cryptocurrency system would disappear.