The final WWE pay per view of 2013 takes place Sunday night, and if you believe the hype, we're in for an historic occasion. The only real focus of WWE promotion of this show has been for the main event. It's all about Randy Orton and John Cena's Championship unification match. Rightly so you could say the unifying of the titles is a big deal, an unmissable moment. Still, it would have been nice to see WWE put some more consideration into the TLC undercard as well. Nevertheless, I think WWE has done enough with the main event to make this a must buy pay-per-view. The tables, ladder and chair stipulation will be exciting, and the clash makes sense given that Cena and Orton are the two biggest faces of the company in the last decade. The show-closing brawl segment from Raw this week really sold the event. WWE has subtly teased a Cena heel turn in the perfect fashion, so intrigue is high. In terms of buying advice, pick it up. I think the show will deliver. The key selling points are strong a title unification, a Cena heel tease, two big names clashing, a strong gimmick match. The undercard could surprise as well, the fatal 4 way tag and handicap matches don't exactly sound great on paper ... but low expectations could serve them well. Let's get to it with specific previews and predictions, click next ...