Yeah when launching league I understand what was the difference, it's just I didn't think at first it was only a difficulty settings.
I tryed again to see if I didn't understand something with the rotation and the ball, but yeah, it seems it doesn't work it goes where I try to push it (or I'm really lucky °°').
Well at least your answer made made replay it 5 min hitting that poor ball (and the ennemy I have to admit :D).