@Arthur-Bomber-Harris With all due respect to the nationalities involved and the luminaries on this forum, building a fully accurate WWII simulator would be boring. The outcome of every game would be predetermined. Why play a game where you know you will lose (Axis) or win (Allies)?
The Russians had way more people under arms (or more accurately had plans to arm and train more people) than the Germans realized. And the Americans could produce more of everything than the Axis could hope to compete with.
The beauty of Axis and Allies is that it abstracts the basic conflict of WWII while incorporating rules that allow the Axis to win so that you have a fun game.
Now, sometimes the balance of the game is overly favorable for the Axis and perhaps that makes people wonder if WWII could have come out differently. Sure, but only if you constrain the basic 2 facts relating to the Russians and the Americans overwhelming advantages. Any “realistic” simulator will simply reinforce the importance of those advantages to the outcome of the war.
I am not saying the outcome of WWII was predetermined in 1940 for the Axis to lose. But only if they were to change their political goal. The main goal can not be takeover of Russia–expand territory, but then draw defensive line and make the Russians sue for peace. If you simulator allows for different political situations, then this could be possible.
In a death match of Fascism vs the world, the Axis will lose.