I'm glad we didnt get into bullet ogives, hardwood vs. softwoods, space between growth rings of twigs....
The truth of the matter is that it is about hitting a animal where it will kill it.
I spend many years selling firearms and the whole "brush" gun idea left me sickened; countless stories of hunters drawing blood and wounding deer while they took pot shots through thick brush or at running animals in brush because they had a "brush" gun.
Please think about how easily a bullet expands and comes apart when it hits the incredibly soft and very well lubricated tissue of a whitetail then think about maybe not shooting through brush.