Can I just say it?
The quote "Ginger Rogers did everything Fred Astaire did but backwards and in high heels" annoys the fuck out of me, because it isn't true.
It may sound very feminist to say, but...no, Ginger was not the same type of performer as Astaire was and she did not even WANT to be at his level (he was impossibly perfectionistic and rehearsed obsessively, and Ginger was not into that). She was a wonderful dancer, but she did not do everything he did. It's just factually inaccurate.