IMHO what the south lacked was logistical staying power. Their last chance to gain and maintain what they needed vanished in the Battle of Glorieta Canyon in 1861. That would make it the most critical battle of the war. After that their only hope was a psychological knockout of northern power brokers causing them to throw in the towel-----but leaving the rest of the north believing they had been betrayed. I doubt there would be an America today had that happened.
Which means that all those who played their assigned role(s) honorably did God's Work.. May they all Rest in Honored Glory.