All scratches are not the same. Some “scratches” may not even be scratches at all. You find these when a painted car bumper or wooden post, or the rubber bumper on a shopping cart, rubs up against the body. The object doing the rubbing may be softer than the paint. Instead of scratching the car, it deposits material on the paint surface — a mark that is actually raised above the paint, not gouged into it.
If the object is harder than the paint, guess where the material gets transferred? From your car to the shopping cart, leaving paint missing. Some scratches can be rescued, while others can’t.