Performance of network coding protocols have been largely evaluated using metrics such as packet delivery ratio and routing load, which can only determined how effective a protocol is. The authors describe the process of routing information in wireless network based on network coding and evaluate the efficiency of throughput benefits that network coding offers. This is archived with a specialized method known as Data Envelopment Analysis (DEA). As a result, efficiency of COPE performance is compared with the traditional IEEE802.11. In additional, decision making unit called DMUs of protocols are determined. This could assist network designer to better plan for optimum benefits.