This achievement requires that you win the same cup with three different teams. To start a cup, from the Main Menu, select Tournament>Start Tournament. Here you will be presented with a side-scrolling list of leagues and cups. The shortest cup to play is the German Deutscher Pokal, which only has 5 games. Before starting each match, you will see the option to Simulate. Tap this and then choose Visual Sim. Make sure to win every single game to win the cup. Doing this one time will unlock the "Perfect Cup" achievement. Watch the game clock above the score. You will want to push the checkmark and choose to intervene. If you are tied or losing, intervene sooner rather than later so that you have enough time to score a few goals to secure the win. If at any point you are about to finish a game without winning, simply power cycle your device to prevent the game from auto-saving (which occurs after each game). If you have GDR3 update for Windows Phone, you can simply hold the back button to bring up the multi-tasking screen and then tap the "X" to close FIFA 13.
After winning the cup ones, choose the same cup again, but use a different team. Use the same simulation process. You must win every game to win the cup. Remember to always intervene, even if you are winning, so that you get credit towards playing 200 matches for the "International Player" achievement. After winning the same cup for the third time with a third team, that achievement will unlock.