From what I've seen, very few of the celebs have done all that well, so it's a bit harsh to pick on Stacey Solomon.
You've also got to take into account that performance on quizzes is not so much a measure of intelligence as a measure of ability to recall trivia under pressure. Clive Sinclair came last on the episode he appeared in, behind a 12-year-old Blue Peter presenter. And Brian Moore WON his episode and he's a proper thicko.
d.