Well, at least with the CPS system, you see how the placements are determined ... under 6.0, you couldn't tell what part of the skate the judges wre rewarding or not.
I used to feel the same way about PCS scores - and I do admit that different judging panels reward different aspects of skating slightly differently - but, I started looking at "what" the scores represented and what each aspect of it means. That and having a DD who is a judge (qualified to judge under CPC) helps. Once I sat with her and looked at some of the training videos they use, and started asking questions when going to comps, I have a better understanding of what it is that the judges are looking for. Made me a lot less confused with placements.
PCS scores are a winning factor for many skaters ... it certainly is the "carrot and the stick" for skaters who don't like to do edge work and footwork and transition drills in terms of getting them to do that "boring" not jumping and spinning stuff! It also means that a really good choreographer (whether it be a coach or an outside person) is an investment that pays off. I'm seen quite a few "good" skaters who have been held back by inferior choreography, and some weaker skaters who have been helped by strong choreography that hits the PCS look-fors, good musical choices, and wise costume choices.