That's a good post shakedown, made me smile at any rate.
Not everyone listens to Lisa on the radio (I didn't know her before SCD), nor watches the One Show avidly. I see it occasionally but am usually cooking or serving at that time. So I did know Christine slightly but had no real opinion of her before SCD. I expect that is the same for a lot of us.
Christine comes across as very pleasant. Of course we don't know them personally so they all probably have a horrible side to their nature but Christine is not on the show to be voted "Miss Sweetness and Light". She gets votes because she tries hard, improves, takes criticism on the chin and seems very nice with it. It doesn't all come easily to her. Not saying it is easy for other competitors, it obviously isn't, but people like to see someone who struggles a bit, who doesn't appear to have much natural flair for dancing yet, with hard work, manages to perform well.