there is no balance in this address that you linked here. and there should not be any, BCash has implemented a well working replay protection which prevents from things like that (a transaction being replayed in another chain) from happening.
the address being valid on other
copies of bitcoin is just because they copied bitcoin without thinking and have been causing a lot of problems during the years starting from litecoin (copied P2SH) and has been going on until today with all these nonsense forks.
Agreed but isn't peculiar that there are 2 identical addies with the original and a fork of