You also assume you know what Nagasu's PCS should be, and what it should not be. I tend to like the TES system, as it is an objective measurement and judges have to defend their scores if they stray too far from the norm. The PCS scores are much more subjective.
Remember, Rochette placed 3rd in PCS in the Olympic SP, while Nagasu was in a tie for 10th in PCS. Yet only a month later in Torino, Nagasu got a placement of 3rd in the PCS in the SP, only 0.08 behind Kim in 2nd. How can you say she doesn't deserve a high PCS when only a month later Nagasu's Placement was the same as Rochette's placement in Vancouver?