That projector looks like a great device for training!
Both of these shots name it quite easy to target the appropriate portion of the pocket because the ob is close to the pocket. This is typically when when playing into certain portions of the pocket comes into play. From greater distances (1/2 table or more) it's not as common unless you're skill level is among the top players in the world.
I'm not a 100% vertical axis player, so I can easily use a little spin on certain shots, like that first one, to get the required shape instead of taking a chance on missing the ball by trying to manipulate the angle in order to stick with using the vertical axis. To each his own, or her own. One player can master pocket-portion aiming with vertical axis CB control, while another player masters using a little spin to move the CB when needed.
As far as aiming systems sending balls to center pocket on every shot.....well, there isn't one that really does this besides using gb or contact points and having an excellent idea of exactly how much throw is going to occur, which can be different from one table to another or one set of balls to another, or from one pool room to another. It's a feel thing that players eventually develop through experience, just like developing the ability to
send the OB into the facing, the thin or thick portion of the pocket, or into the back of another OB when the shot calls for it. Just about any aiming system can eventually lead a player to this skill level of fine-tuning shots, as long as they attention to results and learn to tweak their aim while learning. And as long as they are capable of striking the CB accurately.