When I watched the dance the first time I felt it didn't "flow" very well and I wasn't sure what Rachel was doing with her feet, but I am by no means an expert so couldn't say what was wrong. It didn't particularly work for me and I was underwhelmed.
Then the judges waxed lyrical and gave her four 10s. I noted Len's remark that he hadn't been wowed by her jive but now he was wowed by everything. I thought her jive was great, better than this fox trot. But what do I know?

I often find myself out of synch with what the judges think. So often I watch what I think is a great dance by somebody only to hear the criticism, and vice versa when I sit there unmoved and the judges go bananas. Perhaps you have to be there live.