Write SQL query to solve given problem: What is the difference in the average number of players out by lbw and runout in the matches?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT AVG(T1.Player_Out) FROM Wicket_Taken AS T1 INNER JOIN Out_Type AS T2 ON T1.Kind_Out = T2.Out_Id WHERE T2.Out_Name = 'lbw'