Write SQL query to solve given problem: Provide the point of the winning margin in a match between Mumbai Indians and Royal Challengers Bangalore on May 28, 2008.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.Win_Margin FROM Match AS T1 INNER JOIN Team AS T2 ON T2.Team_Id = T1.Team_1 INNER JOIN Team AS T3 ON T3.Team_Id = T1.Team_2 WHERE (T2.Team_Name = 'Mumbai Indians' AND T3.Team_Name = 'Royal Challengers Bangalore' AND T1.Match_Date = '2008-05-28') OR (T2.Team_Name = 'Royal Challengers Bangalore' AND T3.Team_Name = 'Mumbai Indians' AND T1.Match_Date = '2008-05-28')