As an arsenal fan i love to hate ozil. But real life and fifa are different things.
passing- incredible. will play your grandmother in for a sitter through vidic and ferdinand in their prime.
dribbling- he will not skill run through teams. but he will skip past one or two players and make enough room to play through a killer pass.
stamina- if you do not tell him to relax and conservative interceptions etc he will not last the game. even then you probably want to sub a replacement in at some point.
strength- he is lousy. being fairly tall he can win and score headers. but he can be pushed over by a spring breeze.
shooting- again he can score and will take some fantastic shots. but he will not score you the winner (he will probably assist it though)