Cesc struck again to follow on from his goal in the European Super Cup last week.
"Time will tell if I keep scoring more goals. I have really wanted to do well and I am very happy on the field," the former Arsenal captain remarked.
"I have settled well. The system we are playing is the same I played in when I was a kid."
Lionel Messi struck twice and Cesc added: "It's a pleasure to play with him. You know you can give him the ball at any time to win the game by himself. He is incredible."