Of course he's not claiming anything doesn't 'fit' in his data. That would require screwing up basic arithmetic about clicks. The author didn't claim to be tricked by facebook. He was surprised by the order of magnitude differences. Why don't you see that surprise as valid? And of course the article doesn't give the data to explain why, because the author doesn't know.
1. likes vary in price per area
2. click rate varies per area
Of course he's not claiming anything doesn't 'fit' in his data. That would require screwing up basic arithmetic about clicks. The author didn't claim to be tricked by facebook. He was surprised by the order of magnitude differences. Why don't you see that surprise as valid? And of course the article doesn't give the data to explain why, because the author doesn't know.