-   Bcash needs more resources in terms of storage space for the Blockchain
-   Bcash needs more resources in terms of traffic for a full node
-   Bcash is controlled by people want to take control over the bitcoin brand.
-   Bcash doesn´t have a developer team with years of experience in maintaining a 100+ billion $ financial network.
-   Bcash will be way more centralized as running a full Bcash node is more expensive in terms of hardware and traffic costs than running a full Bitcoin node. Therefore, less people can afford to run a full node.
-   Bcash has no infrastructure and no support. Bitcoin has thousands of websites, merchants, casinos which support it and a network effekt of millions of people who use Bitcoin since years.
-   Bitcoin is running for almost 9 years without interruption, Bcash is new and untested.
-   Bcash is as smart as buying more harddrives instead of using zip-, mp3- or jpeg compression in order to store more files on your computer.
-   Bcash is mainly supported by chinese miners, Roger Ver and Craig Wright, a person who claimed to be Satoshi Nakamoto (the creator of Bitcoin) but he is a clear scam and the “evidence” he showed that he is Sathoshi is a clear fraud.
-   Bcash also doesn´t have its own logo, its just taking Bitcoin´s logo and rotating it a little. Pretty creative, eh?

source:
http://www.bestbitcoinexchange.net/why-bcash-is-a-scam/