If you rated each team on a scale of 1-10, USC and Texas and Va Tech would be the 10's. Each team can play up, but even when they are down, they still find a way to win. That is what makes them championship contention worthy.
Other conferences like the Big Ten and SEC, have no teams that could compete with USC, Texas, or Va Tech. Just the way I think it is. They are however chocked full of 7, 8, and 9 calibre teams. Which is what brings forth the arguments of "better or worse conferences". Sticking teams like UCLA and especially Cal into SEC and the Big Ten, would be a lot harder week in and week out. The defenses in these leagues are heads and shoulders above the the other conferences on an average. When one is talking about the emotional sensitivity of a 19 yr old, these conferences would began to bear down on one's psyche.
Big East should be the topic of this thread because they are the biggest BCS joke. No team in that conference would scare the competition in another BCS conference.
As far as the toughest conference slating 1 vs 1, 2 vs 2, and so on in a tennis meet sort of fashion, the SEC would probably pull out the most wins. And although the games would be kinda boring, they would average a lot less scoring and be nail biters down to the end. It makes it tougher when the Defences are so good, every single mistake could come back to haunt you, even offsides penalties, much less 5 missed field goals.
Take for instance Arizona St., beginning of season they are hyped up, almost beat a LSU team that is upper-middle of the pack in the SEC. They almost beat USC. Then turn around and lose to a horrid but improving Stanford team. All Psyche!! Losing to big Calibre teams like USC in a close fashion can wreck most teams on the verge of being considered great. Seems to happen a lot in conferences like the Big Ten, SEC, and the PAC 10. Teams in the Big 12, ACC (Miami and Fla St are SOO overated but they are 7's) and the Big East dont seem to go through that because there is such wide seperation in the Good and the Bad teams. Teams in the "lower 3 conferences" know their pecking order, only thing that seems to affect that is losing to shiddy teams outside the conference (Oklahoma).
IMHO, The Pac 10, SEC, and Big Ten are similar in structure and are the mark other conferences compare themselves to. Its really too bad the BCS top spots have to go to the Conferences instead of the consensus top 8 teams. I think we all would be happier to see the second place team in the SEC instead of the #1 team in the Big East.