DragonKing: You don't score for the tanks you capture. You score for the tanks you have - with bonus points if they are in the enemy starting area.

Since you have 9 tanks, none of them in your opponents starting area, you have 9 points. Your opponent has 11 tanks, none of them in your starting area, and hence your opponent has 11 points.

And next time, please make your game number a link.