Since the fedal wars seem to still be on, and since the rain delay made the top half of the draw (which is more boring, anyway) a bust, I'm going to reply to you for one more: It is hard to justify that Roger's 2008 was "shockingly bad."
Here is the link to his results that year. As to the Wimbledon final that year, you say that Roger had 'no business' losing on grass to Rafa ever, but you haven't explained 2007, when he nearly did, and he was surely at his peak, then. You're trying to hard to make Roger's 2008 a bust and to justify why he lost to Rafa on grass. You can never just admit that Rafa was better than Roger in 2008, no caveats.