She does have good speed, flow and edge quality, which comes from years of doing figures. Unfortunately, her posture and unattractive arm positions are also a result of doing figures, which were all about the tracings you left on the ice, not how you looked while making them. But that's what "figure skating" started out as, and that's what it was still about when Sonia Henie was learning to skate. You'll notice her spins are extremely centered, a testament to the emphasis on tracings. It's possible that she looks a little faster than she really was just because the film was fewer frames per second than we are used to seeing nowadays. The fewer the frames, the more sped up things look (remember old silent films and how jerky/sped up they looked?).