IL-2 is basically a DirectX 8 game (with some DX9 features that came later on) and it was written for hardware avaliable at the time thus the reason why people with super rigs even today see stuttering in certain parts of the game. SOW on the other hand is written with multi-core cpu, modern GPU and massive RAM allocation capabilities -thanks to the x64 exe- so don't be surprised if your computer might run SoW BETTER than IL-2.
BTW, a 32-bit OS is restricted to 3GB of RAM no matter how much you stuff in it, not 2GB that someone mentioned.
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