Tara went into the Olympics with an impressive Senior International resume: she was 1997 World Champion and a two-time Grand Prix champion before she won the OGM. If Kimmie makes the Olympic team, she will have at most two GP events and maybe a "B" International or US Cheesefest on her Senior resume.
Sarah WAS noticeably cheating her triples during the 2000-2001 season. She worked hard on those jumps and by the time SLC came around, most of her triples were completely rotated. Sarah won the OGM because Michelle fell and Irina did not skate cleanly, and Sarah had the best skate of her life when it counted the most.
It is not only a "skater who poses a threat" who underrotates jumps. Yukina Ota wasn't 'threatening', nor was Amber Corwin, but both were penalized under CoP for underrotated jumps.