To be fair, in the example given you do not hold India. I do not consider “Japan first” as a strategy that works in Anniversary edition. Japan starts with 9 Fighters, 3 Carriers, a Battleship, and will have most of that left after turn 1.
At a minimum Japan will probably have a fleet with:
6 Ftr, 1 CV, 1 BB, 1 CA. Add in a DD for ASW on round 2/3 when USA starts buying subs for the Pacific.
Offensive power 30 Defensive 39
To match the combat power offensively against their fleet, while having defense proof against their attack, America needs to spend two rounds of buys (again, just to be able to move off SZ 56). Something like 1 BB, 2 CV, 1 Ftr, 5 subs.
74 IPCs to let you move out, without any transports to capture territories, while Japan and Germany are ground-pounding China and the USSR sucking IPCs out of your Allies’ economy. Or instead you unplug from the Pacific, scoot your carrier group to the Atlantic, build transports, another carrier round 1, and are contesting North Africa by round 3 at the latest. Any fleet units Germany buys are doomed (eventually) and taking IPCs away from the fight for Russia.