Bias at the AP

Can anyone think of a reasonable explanation, except political bias, to switch these headlines? I always thought it was bad form for journalists to write negative headlines to begin with but this is just ridiculous.

Of course, this is the same AP who have such a problem seeing bias within their organization that they've actually written guidelines for reporting that are blatantly bias against the pro-life viewpoint.

From the 2006 AP stylebook:

Use anti-abortion instead of pro-life and abortion rights instead of pro-abortion or pro-choice. Avoid abortionist, which connotes a person who performs clandestine abortions.

By assigning the negative to the pro-choice viewpoint and re-defining the pro-choice side as the pro rights side, they have effectively chosen sides. Then going so far as to basically outlaw the term abortionist, which by it's very definition is simply anyone who performs an abortion, to simply remove any negative feeling someone may have when seeing it they have made an overt effort to prevent the pro-abortion side from being shown in a bad light.

Just two more nails into the coffin of 'impartiality' at the worlds leading news gathering organizations. As if AP and Reuters didn't have enough troubles trying to defend their reporting of Middle east events.