That's a valid point. The Union Army would utlize approximately 104k troops vs approximately 71k to 75k Confedrate troops. Therefore even 100k troops hardly guarantees Confederate sucess. It's not that the Confederacy didn't have spies so they should have a reasonably good idea how many men the Union had in the AoP
plus assorted Pennsylvania milita units which have more of a nussiance value for the Union then hard core fighting.
So how did Lee think he could decisively defeat the AoP with at best even odds?
Maybe
@Rhea Cole would know?
Leftyhunter