Is CBS covering up humiliating McCain error?

I wrote a couple posts yesterday: one questioning whether the media is providing more favorable coverage to Obama and the other about the timing of the Sunni Awakening relative to the surge of U.S. forces in Iraq.

In a related story, it would seem CBS News edited, prior to showing, a video of John McCain falsely arguing the Sunni Awakening was a result of the surge. 

Steve Benen asks the obvious questions:

Why would CBS News cover-up arguably the biggest candidate error of the entire presidential campaign?

Why would CBS News mix-and-match McCain’s responses to make him appear less incompetent?

Why would CBS News broadcast a question but not the answer to the question?

Why would CBS News post the entire actual interview online, making it easy for us to see their mischief?

Why would CBS News deliberately take the most newsworthy element of the interview, and leave it on the editing room floor?

Why didn’t Katie Couric hear McCain’s ridiculous answer, and ask a follow-up question seeking clarification?

There may well be a bunch of reporters following Barack Obama around the Middle East and Europe this week and there's no question he's receiving the lions share of coverage.  And that's apparently enough for some to claim the media is biased in Obama's favor. 

But sending a bunch of reporters overseas to take pictures of Obama hardly compares to a media that seems willing to cover up a candidates blatant and damaging errors.  Once again, I can only imagine the outrage that would come if Barack Obama was one, repeatedly wrong on the facts and two, the media refused to report those errors.