Sorry to say this, but I believe PCS is more about reputations rather than what the book says.
And
I believe PCS has a lot
more to do with "what the book says", and a lot
less to do with reputations than many like to claim.
I gave my reasons why I wasn't surprised at Rin's PCS: I see other skaters doing a better job of demonstrating the qualities listed in the PCS criteria... and the specific aspects I listed are all things that I have heard an ISU judge mention, when they were critiquing a skater's performance, and explaining why their PCS wasn't particularly high even though it was a very beautiful crowd-pleasing performance.
What reasons/evidence can
you give, to support
your point of view?
If you can show how Rin met the PCS criteria as well as, or better than, other skaters... but received less points...
then we can talk about conspiracy theories like "reputation" to explain it...
Mao has little transitions into or out of jumps, and underrotates most of her jumps because she doesn't have enough speed into them. Did Miki have much transitions?
For PCS scoring, "Transitions" are pretty much all the steps and movements a skater does between elements (jumps, spins, step seq etc), apart from basic stroking and crossovers.
Transitions are not just jump entries/exits.
And Mao has PLENTY of difficult transitions, with a good variety of balance-threatening and vertical movements, difficult choreography, full extension, etc... and she accelerates effortlessly while still doing all that (relies on fewer crossovers). Just take a look at her SP and FS this season.
She might not do difficult steps or transitions in/out of some of her jumps eg. 3A... but that just means she won't hit the GoE tick box for "difficult/unexpected" entry and might receive less points (technical score) for those jumps. Regardless, the difference in difficulty and quality between Mao's and Rin's Transitions and Choreography is like night and day.
I also doubt Mao's underrotations are caused by a lack of speed - what makes you think that?
As for Miki, I wouldn't say she was up to Mao's current standard, but she was no slouch either.
Some skaters can pop jumps or fall many times and still are given high PE.
Popped jumps and falls are
primarily punished in the TES technical score, not PCS.
The PCS criteria documentation does not list penalties of any sort for mistakes. It only lists what qualities a skater needs to demonstrate for each component.
While mistakes
might affect a skater's ability to demonstrate those qualities, and judges
might choose to decide that mistakes reveal a lack of certain qualities... it's not always the case. It's quite possible for skaters to make mistakes and
still be able to demonstrate enough quality skating to earn high PCS. And indeed we see this happen often...!