Without doubt, the muscle development looked strange indeed for a ballet dancer. Perhaps for any kind of dancer. Ballet develops the gluteus maximus, but NOT that much! The most striking thing to me was the significantly larger thigh on top of a very thin calf. Is this usual with skaters?
The girls are beautiful, and there was absolutely nothing wrong with them, but I doubt they'd win any ballet auditions/scholarships. Their line was completely wonky, and it was all of them, not just one of them.