Stonewall at Gettysburg

I've been watching on TV a civil war history program, and on it a professor was asked what would have happened if Stonewall Jackson had lived to participate in the crucial battle of Gettysburg. The professor began with the obvious (that it's likely the battle would not have been at Gettysburg) and then went on to say that if Jackson had been at Gettysburg, the South would have won.

Baloney. If Jackson had been at Gettysburg, most likely he would have been killed near the peach orchard and by his own men. (We don't talk about fragging.)