Yu na had a fall in SP and popped a lutz in LP. Reason why yu na fans were upset with her placing was due to PCS (yes, it is real shocker

Kostner got virtually identical PCS with Kim despite her messy LP performance and Mao had 2 points advantage over Kim in PCS despite she spent significant amount of time without doing anything afer her fall.
I also thought their PCS didn't make sense but I am not sure whether it would have made difference even if Kostner and Mao got PCS worthy of their performance.
In other words, it would have been borderline call which could have gone to either way.
You can't blame yu na fans for believing she was real winner in that competition just like you can't blame Kwan fans for believing Kwan was real winner at Nagano.
Now when it comes to that notorious "lip", we might need help from CSI to decide which side's evidence is more reliable but clearly ! in coc LP didn't make sense.
In SA, it actually looked like slight outside edge from video clip ( and yu na fans came back with their counter evidences, so we really need help from CSI crew) but her flip during coc LP was such a obvious inside edge that I don't know why Techinical panel gave ! to her flip.
I just hope judges make correct call when Mao skates. We might see hellgate open