Advanced shooting is the best of a bad bunch in this game, the shooting is just wrong fundamentally in my opinion...
In real life when you strike a football, usually you hit it sweetly and it goes pretty close to where you intended, or it will be scuffed/sliced/skied to some extent with a very different trajectory/power/spin to when you get that perfect contact (sometimes for the better).
In PES, the "shot error" has pretty much no effect on these factors - you'll see the exact same type of shots with the same power/spin, only it'll end up aimed slightly differently somewhere in or around the aiming circle.
This is a Rotherham striker on his wrong foot, sprinting 45 degrees away from goal;
Even from this awkward situation, just aiming a low shot down the middle with full power makes it impossible to shoot off target. You can try these sorts of things for ages in training mode, and even poor players on their wrong foot will absolutely thundercunt it on target without fail.
Try these sorts of shots with Gary Neville's wrong foot in PES5/6 and you'll see the ball end up all over the place...