yeah, the combo music timing is better than practice, actually perfect. I guess the mistake in lutz is due to music timing as well, she wanted to jump to the music and also a bit nervous, so, a botched jump. I guess. So Youn's lutz jump is not that consistent, however, she always wanna add something to it, last season, she added a inna bauer before lutz and failed many times.
EDIT: Haejin's choreo is really good, and she performed it well, and I like her SP ending, better than SoYoun's (IMHO), other than that, both music are difficult music to skate to. and the choreo reflected the subtle difference of the music and the quality of the 2 girls.
I like SoYoun's music editing. and her step sequence music is more difficult than Haejin's.