A wildly swinging free leg may be reflected in some of the PCS marks. But it should be more accurately reflected in the GOE for that element. And as for under rotation, the leeway is exactly 1/4th of a turn, as determined by the tech specialist. If he deems that a skater landed a jump even 91° short, that gets an under rotation mark. And what does that do? Let's use Mirai as an example:
She landed a 3lutz in her LP. It looked fine to most of us. But the tech specialist deemed it somehow shy of the magical 90°. As a result, an element she would've gotten 6 points on is now worth 1.9 points. That's a loss of 4.1 points. On top of that, she gets a deduction on the GOE. She'd have to fall on her *** four times to lose those points otherwise. It's quite silly.
Exactly! So hypothetically, a skater who underrotates a little for several of her jumps may get less than one who rotates everything but falls a couple of times, which is really ridiculous. Underrotations are bad but so are falls and lack of graceful movements on the ice. I get the argument that this is a sport, but it's not just a sport about jumps; it is also about grace and presentation. So if one skater is not as good as in the technical aspect and one is not good in the artistic department, shouldn't their scores even out? But Flatt has a great margin over Mirai, which means the system is biased toward technical.