I think it's the angle of the pictures, because when you look at Sasha from the side view, she looks like she rotates her hip as well. But I think she's narrower or something because there is a difference. Here's a couple of examples to compare side by side of OE spirals of both:
http://www.sashafans.com/media/galle.../short-ap5.jpg
http://www.webwinds.com/kwan/kwan85333.jpg
A ballet fan friend of mine was telling me how many people who do ballet would find our skaters' arabesque spirals "wrong", that they shouldn't rotate their hips. They see a good arabesque position to be when the hips are squared, like parallel to the ground, and the leg raised directly behind. The examples she showed me look to me like a traditional camel, just more extension.
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