"on the American side, we see prudence; on the Japanese side we see detachment from reality"
That's one hell of a "victors write history" moment right there
Firstly, I refuse to believe that prudence vs detachment from reality is an apt summary of the Pacific war. I'm no expert on that theater of war but if the western European land theater is anything to go by, the American approach to war is hardly one of 'prudence'. Rather, a slow walking effort that prides itself on finding as many walls to bash their heads against, as possible, and calling that 'generalship'.
Secondly, I think in your dismissal of the Japanese strategic and operational planning, you confuse the political and the military sides of the war. The japanese refusal to accept that the war was unwinnable, and that there were no good opportunities to give battle to the USN, was not a military failure but a political one. You could argue over whether the fault was with the admirals who didn't use strong enough words to explain to the political leaders (the political generals) how bad the situation was, or with the political leaders not asking the right questions / deluding themselves in spite of clear evidence that the situation was hopeless. But you can't blame admirals for planning battles against poor odds when it's a political choice that they must continue to give battle against poor odds, instead of refusing battle against poor odds and hoping that political negotiations can find an end to the war. When faced with terrible odds, and lacking permission to lay down arms, no military will really look good. The only operations that you can plan under such conditions, are forlorn hope type attacks. That the Japanese navy continued to do so speaks volumes about their discipline and their exemplary soldierly spirit. It doesn't say a whole lot about their planning and strategizing abilities.