@mysteryman,
While I agree that MacArthur was a man of many gifts and excelled as a division commander during WWI, and as our Viceroy in Japan after WWII, his military prowess as a Theater commander during WWII and the Korean conflict is much overrated.
He was caught utterly unprepared in the Philippines at the outset of WWII. The Japanese attacks from Formosa were entirely predictable, and his forces were poorly deployed and unready. He did a creditable job in his South Asaia campaign later on, but that was really a sideshow. Japan was defeated at Midway and in the Marianas campaign in the opening years of the war. These operations; and the real "Island hopping" that led to the creation of bases near japan from which we could attack them directly; as well as the submarine campaign that destroyed Japanese vital imports of raw materials, were what brought about Japan's defeat were all led by Admiral Chester Nimitz. MacArthur was but a political force who commanded resources only to avoid embarassment, he was even an annoying distraction to the real effort.
His brilliance in orchestrating the amphibious landings at Inchon in Korea made up for his earlier unpreparedness in his theater. His folly in pressing the attack to the Yalu river, while ignoring the basic strategic interests of China and even specific intelligence pointing to their intervention almost cost us the whole thing.
A great figure, no doubt, but certainly not one of the best.