Did it? Well the pbem shows three things:
1) don't give an army into Kais hands ... he is able to use it too well

2) the axis has significant military advantages in this scenario which need further balancing (you did a good job with the germans there)

3) the economic overweight of the allies is to slow in coming compared to that axis military power
Firstly, thanks for your positive comments on me

. I think I have an advantage because I know the map and setting too well for obvious reason.
But I am not too agree about Germany (or Axis in general) being overpowered. Fanda told me that in the other PBEM game he is simultaneously playing, Germany in that game is really suffering. Germany only able to take Copenhagen and Amsterdam and lost Amsterdam to the Allies in the second turn! Note that, they have a human player of France.
For our game, at this stage, it is still too early to say the Axis is doing better than the Allies. But if Germany in our current PBEM is doing better than your expectation, it could be due to 1) No human France and China; 2) The author is playing Germany.
Also, I did some interesting statistic over last week about the scenario. I can publish the numbers later, but out of my head, here are some interesting findings:
1) America is earning 4 times as much gold as any of the other major players. (Surprisingly Russia is not so rich, but still earn more than Germany).
2) America and Russia are approx. twice as productive as Germany. Russia being slightly higher than America.
3) Britain, America and Russia are producing 3 to 4 times as much food as Germany.
Do you still want to say the Allies economy is too slow?
If we ever going to start another PBEM game, a human France and China would greatly decrease the Axis expansion rate I think. I wouldn't mind trying to be France and China if we have a chance.