But that's my whole point. At no stage during the war, nor under any conceivable set of circumstances was the US in a "death struggle" with Japan. Japan was in a death struggle with the US but not vice-versa. America was never under threat of defeat, so any action by the IJN would probably have extended the war but it's very doubtful, IMHO, that it would have altered the result.
I think we need to stop talking about fish-heads and get back to aircraft, though.
Let me explain my point, I thought it was obvious but I'll spell it out:
- We all know that Midway was a very close run thing, in fact not a little bit of luck was involved as well as leveraging of every available asset to the maximum possible, from things like radar to the capabilities of the Allied aircraft involved: SBD, F4F, TBF, B-26, PBY etc.
- If Midway had gone the other way, as it very well could have, and instead it had resulted in a major US defeat, that would have had serious repercussions.
- If due to losses at Midway, subsequent battles had also gone against the US, the knock-on effects would have been substantially more drastic.
If Midway had failed torch wouldn't have been as robust and may have failed altogether. This extends the timeline of the war substantially. Extending the timeline of the war could have had unforseen outcomes of many kinds.
If for example, the US had been equipped with Fairey Swordfish (or say, Skuas) instead of SBD Dauntlesses I am confident they would have lost Midway and Coral Sea both and the Pacific War would have gone quite differently.