Gettysburg-"Turning point"of the Civil War?

[Hess1865]

In these discussions no one ever mentions the Battle of Atlanta. If Atlanta doesn't fall, Lincoln loses the election and the CSA wins independence.

OK, how do you think Atlanta would have turned out if Jeff Davis hadn't replaced Gen. Johnston with Gen. JB Hood??
Bad move in Davis' part IMO.
We all know how Jeff and Johnston got along!
But I think Johnston would have been patient and do nothing, just hold Sherman at bay, right up to the November elections.
Davis wanted a fighter, and Hood was-a reckless fighter!
I've read where Sherman and his men couldn't wait to fight Hood, knowing they had superior forces and could beat him.
So that command change really started the end of the Confederacy IMO