I agree with you. Barret wasn't even a posibility before this report, and I am almost sure whoever reported this (don't know who exactly the original reporter was as I have seen this in many different sites) didn't even consider Barret as a name worthy of especulating for until Bragging Rights.
However, isn't this more or less what happens every year concerning Taker? Last year, nobody dared to predict HBK vs Taker II. When WWE started teasing it, all reports kept saying it was a red hearring for HBK vs HHH. Now, for Mania 27, we have heard about WWE pondering on having Taker face HHH, Cena, Sheamus, Goldberg and now Barret. Is ridiculous. Entertaining. But ridiculous.
Anyways, if WWE keeps their booking, and because I don't think, even if they have pushed Barret so hard, that they will give him such a big profile match this early on and considering Taker will not be here long enough, I am saying they either give us Cena vs Taker or Taker vs HHH, and Barret will be facing a face David Otunga. That, or some midcard match against HHH a la Sheamus. That if he's lucky. If not, he'll be in some sort of All Out Nexus implodes Battle Royal