Es hätte für den Ausgang des Krieges keinerlei Bedeutung gehabt.

Das wird hier deutlich gemacht

Grim Economic Realities (combinedfleet.com)

So America had an advantage; so what? Well, as an example, let's take a moment to consider the importance of the Battle of Midway. Midway is often cited as the 'Turning Point in the Pacific', the 'Battle that Doomed Japan,' and a string of other stirring epithets. And there's no question that it broke the offensive capability of the Japanese Navy. The question I ask is: what difference would America's economic strength have made if the Americans had lost badly at the Battle of Midway? Let's take the worst case scenario (which, incidentally, was very unlikely, given our advantage of strategic surprise) in which a complete reversal of fortune occurs and the U.S. loses Enterprise, Yorktown, and Hornet, and Japan loses none of the four carriers which were present.

Das Ergebnis

In other words, even if it had lost catastrophically at the Battle of Midway, the United States Navy still would have broken even with Japan in carriers and naval air power by about September 1943. Nine months later, by the middle of 1944, the U.S. Navy would have enjoyed a nearly two-to-one superiority in carrier aircraft capacity! Not only that, but with her newer, better aircraft designs, the U.S. Navy would have enjoyed not only a substantial numeric, but also a critical qualitative advantage as well, starting in late 1943. All this is not to say that losing the Battle of Midway would not have been a serious blow to American fortunes! For instance, the war would almost certainly have been protracted if the U.S. had been unable to mount some sort of a credible counter-stroke in the Solomons during the latter half of 1942. Without carrier-based air power of some sort there would not have been much hope of doing so, meaning that we would most likely have lost the Solomons. However, the long-term implications are clear: the United States could afford to make good losses that the Japanese simply could not. Furthermore, this comparison does not reflect the fact that the United States actually slowed down its carrier building program in late 1944, as it became increasingly evident that there was less need for them. Had the U.S. lost at Midway, it seems likely that those additional carriers (3 Midway-class and 6 more Essex-Class CVs, plus the Saipan-class CVLs) would have been brought on line more quickly. In a macro-economic sense, then, the Battle of Midway was really a non-event. There was no need for the U.S. to seek a single, decisive battle which would 'Doom Japan' -- Japan was doomed by its very decision to make war.