Well, the title of the threat is "Planes that WON the War" but you are spot on to say submarines were so invaluable. The sinking of the IJN Carrier Shokaku by the SS Cavalla was a spectacular engagement! Not to mention the supply lines shut down by the undersea warriors! I would say, regarding Boeing bombers being the plane that WON the war would be good if the zeros would not shoot them down. With the exception of "Old 666" most bomber missions would not have shut down Japanese production without American fighters decimating the Japanese fighter force first. This dynamic you suggest was, in fact, how it played out in Europe, but Japan was not producing ships and planes like the Americans even without bombing of the Japanese mainland. There have been that said no matter how long the war went on, America would have outlasted Japan through shear war production.