there may be a calculated chance for the Rising Sun: now, IJA have more time to finish China Incident without interruption, as Soviets and colonial empires fights elsewhere, and USA will battle over worthless Pacific Islands for a while with Soviet oil and this time, perhaps, also synthetic oil (OTL damn Germans never sent blueprints or specialists), they also may very well ignore Singapore and East Indies altogether, focusing on Defensive Perimeter in the Pacific - because that's the only important thing for Japan in this war. As long as imperial forces won't allow US military to attack Home Islands, there will be a chance - if not for victory, then for face-saving peace treaty.
LOl at the idea of Japan being better off because the fury of the American people can be focused solely on them.
They'll be fine because the HOI AI is terrible, not because of how this would realistically play out.