Egh. Y'know what? There's still enough residual goodwill from "The Avengers" that I can't even be mad about this kind of marketing. Yes, Marvel (and Whedon) are allowed a pass on this - they did the impossible, they earned it.
Previously, everybody's top question was: "How is Coulson alive again?" But now, I'm guessing it's either about to be equaled or passed by a new one: "Who is that (apparent) super-human pulling a rescue at the beginning?" It all goes by pretty fast, and I'm about to do some screencapping to see if it can't be made clearer, but check it out yourself for now:
UPDATED: Screencaps and guesses HERE.