General Douglas MacArthur's MoH was not given for his escape from the Philippines. The citation for his Medal is as follows:

For conspicuous leadership in preparing the Philippine Islands to resist conquest, for gallantry and intrepidity above and beyond the call of duty in action against invading Japanese forces, and for the heroic conduct of defensive and offensive operations on the Bataan Peninsula. He mobilized, trained, and led an army which has received world acclaim for its gallant defense against a tremendous superiority of enemy forces in men and arms. His utter disregard of personal danger under heavy fire and aerial bombardment, his calm judgment in each crisis, inspired his troops, galvanized the spirit of resistance of the Filipino people, and confirmed the faith of the American people in their Armed Forces.

Simply put, it wasn't for leaving... it was for getting things prepared to stay and fight in the long run. MacArthur's list of medals is pretty impressive, though I'm not entirely sure about his Distinguished Flying Cross.