What's "ersatz" about it? Be specific. That, by the way, is another example of an ad hominem attack by you. There's nothing artificial about the comparison. You keep trying to be dismissive of the points I'm making by using loaded language.
However, comparing scores, instead of placements, across competitions is a dicey matter. Lombardia scores this year, for example, were inflated. NHK less so. Doesn't mean the skating was better at Lombardia.
But the main point I'm making is that Polina performed well enough that it wasn't a mistake to send her to the Olympics. IF Mirai had gotten second at Nationals, I would say the same thing about her. Though, ironically, the huge advantage Polina has had over the experienced Mirai is that Polina handles competition pressure better. It's a damn shame about her injury and slow recovery. We could use good old consistent Polina.
Polina outperforming Mirai isn't a one-time thing--as Chuckm points out, she's done it numerous times. One of those times was 2014 Nationals.

"Ersatz" is not a personal attack against you.
It is an expression of my disagreement with your rationalizations. (IMO, they are rationalizations.)
As I have said, I don't see any relevance in a comparison of 2014 Olympics results to 2016 Worlds results -- whether placements or scores.
But if you are insistent on comparing those two comps, then is a difference of one place (Polina's ninth place vs. Mirai's tenth) really a solid indication of any superiority?? Not for me. Means as little to me as Mirai's slight edge in terms of score.
And your original post regarding those two comps pointedly made note that Mirai's placement was lower.
If what you really meant is that the placements were similar, why did you not say so?
And your first post in this conversation said that Mirai should have skated well to get to the Olympics -- as Polina did.
At
2014 Nats, Mirai was within three points of Polina.
If Polina did "skate well" at 2014 Nats, I don't see some kind of clear demarcation that Mirai did not "skate well."
No question that Polina outscored Mirai -- but I don't agree that a three-point difference is grounds for emphatically declaring that one lady "skated well" and another did not.
AFAIK, the only major competitions at which Polina and Mirai have gone head to head are three years of U.S. Nats. (No international comps, AFAIK?)
And yes, Polina has been ahead each of those years at Nats.
But IMO, the only year of Nats that was relevant to the Sochi decision was 2014.
As I said from the beginning, I did not have a problem with the Sochi decision.
But I don't agree that if the selection committee were choosing btwn Polina and Mirai, the choice would have been a no-brainer in Polina's favor. There would have been a case to be made for Polina. There would have been a case to be made for Mirai.
The committee decided to go with Gracie, Polina, and Ashley. I did not and do not have a problem with the decision. But I do object to insinuations that it should/would have been unthinkable for the selection committee to give Mirai consideration in its decision-making process.