netmeg - 5:23 pm on Jan 16, 2012 (gmt 0)
I don't think Google is near as worried about explaining adjustments to publishers as they are about keeping advertisers happy. If there's any benefit of the doubt to be given, it's on the advertiser side, not the publishers.
Moreover, if the advertiser's credit card fails and the ads aren't paid for - guess what, you get adjusted down for that, too.
AdSense is what it is. As I have often said, the price we pay for the ease of implementation, better payouts than most similar programs, relatively reliable payment (used to be reliable payment, but they've been goofing on that in recent months) and low bar to entry is almost complete lack of control. If you want more control, you know what you need to do.