Brit Factor

Now that it's unofficially official that Britney Spears will be joining the judges table on X Factor (along with Simon Cowell, LA Reid and, reportedly, Demi Lovato), the questions about will she or won't she can be put to rest (plus the questions of how much will she make, will she do one-year or two, etc.). We can all now focus on, not will she do it, but how WELL will she do it.
Very well, I think.
In order to be a judge of anything, you need to have knowledge about the subject you are judging. Clearly, Britney has knowledge about singing/performing. She's been in the business 13 years. It also helps to have success in the field your judging. For instance, you wouldn't want the judge on a cooking show to be someone who, although the or she cooks, can't cook well. Britney, though, cooks very well: five #1 hits on the Billboard chart, plus countless top 10s (not to mention every studio album she's released has debuted in the top two on Billboard's 200 chart).
Besides knowledge and success, you need, at least for TV, a personality. This is where some people think Britney's in trouble. Over the last four years Britney's personality has changed, according to those who think she'll fail. In reality, has it? Yes, during TV interviews her answers are a bit more concise, her overuse of the word cool is evident, and she can appear uncomfortable at times. But if you watch videos of her when she thinks no one is watching, she appears to be the same old Britney.
Here's the thing: no one is interviewing her on X Factor. Here's another thing: some of those interviews Britney's done in the last four years, at least those on the radio, were awesome (showing that she still has that vibrant, larger-than-life personality). Plus, she has three other judges on X Factor to step in if she gets tongue-tied (or says cool one time too many).
I don't know how you rank the current crop of judges, Adam Levine, Cee-lo Green, Christina Aguilera, Blake Shelton, Steven Tyler, J-Lo, Randy Jackson, Simon or LA. Maybe Britney won't be as polished as J-Lo or as cool as Cee-lo. She definitely won't be as "difficult" as Christina. But she'll bring warmth, because if there's one thing everyone says about her it's how nice she is.
Sure, X Factor could be a train wreck. Britney could freeze up the moment the light goes on. However, bet against that. Bet on the woman who's headlined the MTV VMAs so many times, they might as well call it the MTV Britneys. Bet on someone who's been on TV since she was 10. Bet on someone who's been asked every question in the book - from her boobs to her parenting skills - and barely managed to bat an eye.
I'm confident she'll crush this. Why not, she's crushed everything else.