Jason is more than "fine in shows". Jason is a elite, competitive athlete whose median score is twenty points more than Ilia's, going into Nats.
Ilia has never come close to what he did at Nats, and of course there was Nats' home cooking. For everyone.
Jason has taken the scoring as the ISU currently constructs it and placed routinely on international podiums with scoring rom international judges, finishing ahead of many a quadster. Neither Jason nor Ilia have a chance of medaling in Beijing, even if that were a criteria, in a "normal" comp.
I have always been an advocate of "first three go". But I am also an advocate of fairness. The criteria are what they are, Jason played by the rules, and Jason qualified. There is every point in selecting the skater who qualified and "allowing" him to go.