Write SQL query to solve given problem: How many more sports games than simulation games?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(CASE WHEN T1.genre_name = 'Sports' THEN T2.id ELSE NULL END) - COUNT(CASE WHEN T1.genre_name = 'Simulation' THEN T2.id ELSE NULL END) FROM genre AS T1 INNER JOIN game AS T2 ON T1.id = T2.genre_id