In some ways, the Sherman's virtues went against it. If it had been a little less effective at reliability and ease of production, it might have been replaced quicker. The numbers made the advantage. Even with only a 38% effective kill against a heavy tank, if you can get 5-1 or better numbers, you are going to have only one outcome in most cases. This is why the T-34 did so well.

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Lord, let me be the person my dog thinks I am.