The headlines reads "A Glimmer of hope for GOP," and the article does it best to stitch together polling data to showcase the Republican talking point that there's been real movement toward McCain.
Politico is relatively honest in terms of presenting the numbers that don't add up for McCain. But the whole article has a definite, well-it's-possible vibe to it. (Which, the drama-starved press much prefers.)
Politico could have just as easily used the same topic and the same numbers to show how, based on all the data, the "comeback" talk (i.e. there's been a significant shift in McCain's favor) remains hollow.