In our games of Global, we tend to have mostly Axis victories. I would say roughly 60-65%. We had more Axis victories in the earlier games but now the Allies are slowly catching up. For later games it might even be close to 50-50.
Some of the Allied wins are due to our players learning better strategies and getting more experience with the game. Some are due to the Axis players getting bored with the “usual” strategies and trying something new and perhaps off the wall which ends up not working so well and the Allies end up mopping up the mess.
Odd strategies not withstanding, most of our Allied wins involve the US going hard after Japan first – either actually taking Tokyo out or neutralizing Japan by killing off the fleet and surrounding the island with subs. Between convoy raids and SBRs, Japan is not making much money while China and India whittles down what land army they have left.
Even this only works if Sealion doesn’t happen so UK is still in the game and keeps Italy out of Africa and the Middle East and Russia can hold onto Moscow.
Like others have said before, the US won’t win by spending somewhat evenly on both sides. They just can’t get enough stuff to really overpower the Axis on either side.
I have rarely seen the Allies win with the US going heavy Atlantic and making the Pacific low priority. It gives Japan too much freedom to romp around the Pacific and Asia gobbling up territory and killing Allied units. China, India and ANZAC can not handle Japan on their own without a significant US presence out there, at the very least in a strong enough navy to challenge the IJN. Warships cost money so the US will have to spend a fair amount in the Pacific to even match Japan, much less surpass them. Since it has already been stated that if the US spends evenly in both theaters, they are likely doomed in both, the US might as well spend the majority of their money in the Pacific and pound Japan good and quick. After all, you don’t want to give Germany too much time to wail on the doors of Moscow.
Now, I have seen a couple of games where the US spent heavier in the Atlantic, approximately 75% or so, and the Allies ended up winning, but these were more due to Germany’s failure to take Moscow with no “second wave” to continue the fight. This resulted in Russia being able to build back it’s forces and battle back to Germany (kind of like in the real war). Also, Japan in those games simply failed to take their objectives. Either they just didn’t plan right or got bogged down in some places.
So my advice for US strategy is to go heavy Pacific and take Japan out as quickly as possible, then go after Europe. I know it seems like a tired old strategy and a lot of guys get kind of tired of it, but I think it is the best way to achieve an Allied victory. If you can find a better balance, then good luck to you.