The IWC sure likes to talk up its own importance, doesn't it?
'They made it look like an Undertaker promo to throw us off the scent', 'Vince wants to swerve us!' Etc. Etc. To quote Sharon Osbourne, Really?
Despite what many people here seems to think, Vince McMahon doesn't spend his time locked up in his office figuring out his next move in the eternal chess game with the IWC. In fact, he doesn't care about the IWC all that much. We make up a small, small fragment of the audience. Not to mention, 90% of us would keep watching WWE regardless of what would happen. Sure, reports say that Vince has gotten pissed off because of the IWC finding out spoilers. But who wouldn't? But that's the only time the internet comes into his mind.
Now the idea of WWE trying to throw us off the scent of Sting's 'debut' is a bit silly. Why wouldn't they make us think it wasn't Sting from the start? To get us excited, then disappoint us, and swerve us and then the big unveiling will be that it was, in fact, Sting? The IWC's collective ego is mind blowing.
WWE are trying to create a buzz about 21/2 show. But that's among casual fans or hardcore, younger fans. Those people would be just as excited, if not more so, about Undertaker returning at that Raw than Sting showing up. Yeah, Sting would bring a big buy rate. And while his career is winding down, I've never said that I think Sting will never go to WWE, I think before his career is over, he will make at least one appearance in WWE. But this won't be it.
People complain that WWE is always disappointing them, but that's only because you guys get yours hopes up for the most ridiculous things. Some people actually though Lesnar or Batista would appear in the Royal Rumble. Hell, some people thought Christian was actually going to win the Rumble. They say anything can happen in wrestling, but come on.
Every piece of evidence points towards Undertaker being the subject of the promo. Any arguments that are made for it being Sting's debut (the trenchcoat, the tone, etc.), well they can all be applied to Undertaker too. But Undertaker has all those arguments, plus 2 or 3 other, very strong arguments.
Stop over analysing and being paranoid about how the WWE Creative team is trying so hard to swerve you. It's Undertaker. Not Sting. If it is Sting, I will run naked through the streets.