From what I see, your strategy does nothing to attack Sinkiang, China and India, giving them time to build ICs and making the Japanese road to Russia essentially impossible. Also, what about the U.S./U.K. shuck? If the conveyor belt really gets going, you have to deal with 6-8 Inf a turn, if not more, and that will make Russia impossible to defeat without sacrificing Berlin. Play your strategy with a little more support on WEu and knocking out Southern Asia (which also gives Japan $7 to use, not the Allies), and it will probably work. Just going through Manch is asking for trouble.