4) League ratings have been a fairly popular source of comments, so let's talk about them again. The popular perception (as shown by a CBS columnist here), is that the Pac-10 is somehow "down". The basic reasoning is that the overall records aren't outstanding (the league's OOC was close to .500), and that the league is VERY top heavy (Oregon and Stanford have basically dominated the league). This is, of course, silly.
As shown in the above tables, the Pac-10 has the BEST record nationwide against other AQ leagues. Moreover, of all the AQ leagues, they're the one which has played by far the toughest slate. They're the only AQ league which has played a majority of its 1-A games on the road; they've played the fewest by far games againt the bottom 40 teams (as rated by compu-picks). They've played precisely ONE game against the Mac and Sun Belt combined; as a contrast, the Big Ten has lost more games to those two leagues (both double-digit HOME losses to the MAC) than the Pac-10 has games against them. In fact, if you break down the OOC records by groupings of 20 (as in the above table), the only leagues that show comparable results to the Pac-10 are the SEC and Big 12, and that's before you factor in home-field advantage. It's also worth noting that the Pac-10 is one of the only leagues without a AA loss; while the model doesn't factor in those games, as humans we can do so, and it's another point in the league's favor.
Focusing on the bottom 40 for a bit, the Pac-10 doesn't have any bottom 40 OOC losses (only the Big 12 and Big Ten can say the same), and had only one game with less than a 7 point win against that group (USC's win over Virginia), as opposed to the SEC's two close calls against UAB; the Big Ten's close calls against Ark St, CMU, and Vandy; the Big 12's close call against Troy; the ACC's close call against Rutgers; and the Big East's close calls against Marshall and FIU.
Basically, the unfortunate truth is that the BCS rewards easy schedules and punishes tough ones. When a league as a whole "gimmicks up" its record (overwhelming number of home games, majority of OOC games against bad competition), it gets rewarded. When the Big Ten schedules a ridiculous 17 games against the MAC/Sun Belt (not to mention the AA games), and actually LOSES two of them, it gets rewarded for it. When the Pac-10 has nine league games, a brutal OOC slate, has an outstanding 10-5 record against other AQ's, and has a near-total lack of "bad losses" (the worst was Wazzu at SMU, hardly a MAC-level loss), it gets punished for it with the silly perception that it's "down". The inescapable conclusion is that there is NOTHING that the league could have done to be perceived as excellent this year given the schedules it had to face.
Arizona is the same type of story as most other teams that compu-picks thinks is underrated: very tough schedule, tendency towards blowout wins and close losses (except at Stanford and Oregon, compu-picks' #'s 1 and 2). They're better than their record, and despite what the BCS thinks, there simply aren't 25 teams out there better than the Arizona Wildcats.