Xavi Hernández believes FC Barcelona at their best are more than a match for any side after the UEFA Champions League holders swept past Arsenal. "We are working within a specific system in which we all have our obligations and if we are all doing our respective jobs it's a difficult task to stop us," the midfielder said. "[Lionel Messi] makes the difference of course but everyone in this team pulls their weight and it's a privilege playing with these players. It's important that we do as well as we can in both Liga and Champions League and now we're extra motivated to face Real Madrid at the weekend."