April 1945
The final days of April were tough for the Allies, with high air losses one day and a tough naval battle the next. But April was the best month of the war for the Allies, by far.
In April, the Allied lead increased by almost exactly 14,000 points, about twice the second best month. This came about because the Allies had finally closed with the enemy and the Home Islands and had the supply, troops, ships and aircraft to hit consistently. Army Loss Points, Base Points, and Strategic Points were the most efficient direct means of scoring points. The Air War was the least efficient but played an enormous role in making everything else possible - pounding enemy troops and bases and hitting industrial targets. By the final ten days of April, it was becoming increasingly clear that Japanese fighters could no longer contest most of the Home Islands. John is still able to pick and chose points to defend and to organize bushwhacks (that are especially effective if weather grounds Allied fighters).
As of May 1, every IJN city south of Osaka has been reduced mostly to ashes. Very few points remain to be harvested. The Allies have to switch to more heavily defended targets, like Osaka. The 4/30 sweeps there were promising.
The Japanese army has collapsed in China and Korea, where the Allies should be able to efficiently destroy enemy units and gain some points for key bases.
The real wildcard is the sea war around Fusan. John won Round 1 today. What happens over the next two or three days is key. Each day John prevails tacks another day (or more) onto the war. But if the Allies take control of Fusan, a Japanese army will be eliminated and Allied control of the sea lanes and even the skies over the Home Islands will be considerably enhanced (because Fusan's airfield can be loaded up without risk of enemy bombardment).

"Rats set fire to Mr. Cooper’s store in Fort Valley. No damage done." Columbus (Ga) Enquirer-Sun, October 2, 1880.