Judges are like Fans. The judges are human and apparently love the skating (it is a voluntary job? No?). Judges also know the very elite skaters they are about to judge, as do the Fans. They may even have a preference for some skaters for whatever reason and will up their individual scores for them. Fans would do that too, if they had the power of scoring.
The Elements have been given, arguably, base values, but even those are modified by Grades of Execution which are supposed to clarified by their descriptive notes. Are they? This portion of the competition is as close as we can get for quantifiable purposes.
By and large, the entire PC scores are a matter of opinion. The question should be: Are the judges qualified to give such 'truths' in that score? Do they know the difference between a Carravachio and a Botticelli for scoring purposes?
So my conclusion is the CoP continues the opinion method of the 6.0 albeit differently and in more detail. On the Plus side is that collusion is more difficult. Maybe they will find a way to collude again.
Buttle/Joubert and Plushenko/Lyacek remain questionable? or decisive? Personally, I'm mute.