Seems like a DVD feature to me!
How to properly count cards would seem like a DVD extra to me and you are wrong on how you count cards. High cards are good for the player so you want them in the shoe not out of the shoe so when you see a 10 or an Ace you go -1 when you see a 2,3,4,5,6 you add plus 1 to the count 7,8,9 are neutral so ignore them.