ORIGINAL: Onime No Kyo
Sounds like one of those JFB wet dream scenarios.
Not really. The Japanese *do* get significant forward-deployed supplies and fuel. That helps a lot for the early war pace. They also get sizeable home islands resource, oil and fuel reserves above scenario 1-this helps keep their war economy viable longer into the war. There's more early model aircraft in the pools than scenario 1 (e.g., more Oscar Ic, A6M2 at war start). The Japanese also get a few ships-mostly escort vessels, a few extra DDs and 4-5 Guards extra divisions in 1943. This helps.
I'd estimate that scenario 2 (versus 1) adds another 6-8 months (+/-) to the competitive nature of the Japanese in the war and pushes the envelope on Japanese autovictory potential.
Wet dream? Hardly. For that you need to try out the "Reluctant Admiral" and other OOB major re-works with lots and lots and lots of extra, fictitious ships and lots and lots of extra, fictitious capabilities for these fictitious ships.