Ok here is an argument, If Hitler had his way and he went after the destruction of the Soviet Armies and not strategic targets like Moscow, the German Army would be bogged down in the massive job of clearing the millions of POW's that would have ensured, frankly the German Army was never equipped to handle the millions of POW's, Hitler himself never imagined the amount of POW'S his army would capture, why? because Hitler was one who hated to be bothered with simplicities of details.