why Qtum better than XCP (Counterparty) http://counterparty.io
They will do same thing that counterparty already did - https://www.cryptocoinsnews.com/counterparty-brings-ethereum-smart-contracts-to-the-bitcoin-blockchain/
https://bitcointalk.org/index.php?topic=1504601.0
Counterparty, the technology for decentralized financial tools on the Bitcoin blockchain, has started running Ethereum smart contracts by porting the Ethereum Virtual Machine (EVM) to its codebase
Maybe you didn't heard about counterparty?