With all due respect to Grady McWhiney and Perry Jamieson, I think their theory is a bunch of bunk. But, they've published a book and mine is not ready for the publisher yet. So, there you go.
Give me Stonewall!!!!!
There are also a lot of intricacies of Civil War combat with which I'm sure you are familiar, namely that the Confed. "divisions" were much heavier than Yankee "divisions," and therefore if a Southern division was arrayed against a Yankee division---regardless of the reserves available---the weight was with the Rebs. So I don't buy the "outgunned" theory. Later in the war, at Gettysburg, for ex., definitely, but not up until 1863.