It must not have clearcoat then as otherwise the paint should look good, it would seem they are not using the latest in automotive grade coatings. I have done a JD hood for example by using a variable speed power polisher with a foam pad and used a fairly fine cutting compound followed by a polishing compound. But its easy to make the mistake of going too course and create scratches that are very hard to get buffed out. Also not switching to a new pad for the fine compound and having some of the courser compound still in a pad or on the surface that was not wiped off completely. I've seen people have to get their vehicle repainted from some idiot detailing shop that didn't know what they were doing and burn the paint by using the wrong buffing pads and more then likely running the polisher too fast.