You where either pulling your punches as the allies or just trying to help the axis in that game. I just checked the full game.
You ofcourse did play with prior knowledge of the Axis plans so you did make some moves to prevent that, but maby also tried not to prevent it to hard as normally you dont know the plans of your opponent.
You could easy destroy the German fleet in the atlantic when it was out in the open. You had the naval forces for it. Round 3 or 4 the fleet is in the middle of the atlantic.
That would have destroyed german plans completely and would have prevented any funny things japan was planning.
With that much forces spend on navy germany was doomed from the start, japan as well as they control nearly nothing on the mainland and china is a beast.