I don’t think that there’s no objective way to say something is better. There is. One can tell why a certain ballerina is better and deserves the main part, and why the other will just get a 1 min appearance on the stage.
One can tell a difference between War and peace, or Crime and punishment and something like 50 shades of grey, and what makes one art form better and the other worse.
One can say why Shawshank redemption is a better movie than Twilight.
There are experts and professionals who can decide, and have nuanced eye.
I just have a problem with putting a number to it, especially in real time. I think one can say when something is better or worse, but not many would be able to justify why something like presentation is valued at 9.25 and not 9.75.
Well, I think it's only possible to say it in extreme cases, not comparing Shakespeare and Goethe, but Shakespeare and a newspaper reporter.
A ballerina can be technically better, then it is easy. But what about that elusive "soul" , how can it be the basis for judging? What theater is better, Bolshoi ballet or Mariinsky ballet? They say Bolshoi has the soul, Mariinsky the technique, but Uliana Lopatkina from Mariinsky is the very soul of ballet and Svetlana Zakharova from Bolshoi the best technician, maybe ever. Nothing will ever be tangible in artistry.
And TBH I hate Crime and Punishment, Dostoevsky's language and style on the whole. I will say the best master of Russian word is Chekhov. Put me on the jury together with professors who think Dostoevsky is the top of Russian literature, how shall we vote?
Discussing artistry on another thread I realised that there are all kinds of ideas about it. Many people think it is connection with the audience, charisma, emoting. For some, it does not even mean rendering complicated emotions, but just happily smiling and being charming. For others it is telling a story. While for me it is not only emoting but also full connection to the music, creating an image, deep understanding and rendering it through elements on musical accents together with aesthetically suitable movements and facial expressions. Others may have a different perception of artistry. And there is a question of taste, too. There are excellent accomplished skaters who are loved by many but don't touch the hearts of others. If it were simple to say who is better or worse artistically, why, then, all the fan wars? Fans first fall in love because they can relate to a skater and only after that they start looking for arguments in the technical subtleties.
It was a very long way to say that PCS can hardly be used to objectively reflect the artistry of the skater, they are a ranking tool, and when skaters/coaches complain about them, in my book it means they object against the given rank.