Mao was #27 in TES in SP. You think her PCS should be lower than Isadora's from Brazil, Glebova's from Estonia or V. Helgesson from Sweden?

It's ISU that would be humiliated when now we know how Mao skated FS. If all scores Base Value, GOE, PCS mattered to all skater fairly, Mao's PCS result in FS would be 1st, not Yuna's. But then Yuna would get bronze. Judges secure her silver medal, if you are still looking for the controversy.
Yuna was the only OGM contender who entered the Games with #9 program of difficulty. No one did the same. Yuzu, Patrick, Adelina, Caro, pair skaters, dancers? They all challenged. Yuna didn't have a choice. She said that she did everything she could in Sochi. It was her top. She had to count on her reputation points in PCS and GOE because she couldn't skate more difficult program. She lost. This strategy lost. I see its fair game.