Google will be much more credible when their numbers reflect the economical crisis that is happening. Posting another record quarter will raise more doubts about the revenue share than ever.
"Would," not "will." It's a bit early to be discussing Google's 4Q 2008 earnings report, since the numbers won't be known until January.
As for doubts about the revenue share, I can see why people whose EPCs have fallen might be paranoid (especially if they've tuned out bad news about the economy), but some publishers have been reporting record- or near-record earnings per click.