There is some sayings that Confederate generals were so much better than Union generals that if the Confederates was given the same amount of men the Union had they would win,just how true is this statement???
This is a complicated question to answer, which is wrapped up in the 'Lost Cause' myth of the Confederacy.
While you wait for someone more capable to answer, this older post may provide some insight https://www.reddit.com/r/AskHistorians/comments/23vjrf/why_were_southern_generals_better_or_considered/