That would be called, a preference!!! but really what is the difference??? whether you hold 6 or 12 you are holding over... When the biggest game you hunt is a whitetail and you hold at the top of the back 12-14" down is all, a dead deer... sounds simple to me!!

bottom line is practice at the distances you plan to shoot... that way when the time arrises, you are confident in your ability to make the shot...