I read an interesting article while researching the SEC (I think it was by Bill Connelly) that said the SEC has been hiring people from the Saban coaching tree and people trying to imitate him and it quite simply hasn't worked and is hurting the conference. There is only one Nick Saban, no amount of imitation will make you better than him ever. Take a look at the Bill Belichick coaching tree as more proof of that.
That being said, there are maybe 3 coaches in America remotely on his level right now (Meyer, Dabo, and as much as it pains me, Harbaugh) with several others (think Tom Herman) including our fearless leader that with a few more years of success could be on the cusp of breaking in to that category. It's a very interesting dynamic and you bring up a great point. Regardless of the coaching talent the SEC brand and geography in relation to top recruits will always keep it in the discussion for the best conference, but they definitely aren't as invincible as they once we perceived to be.
One final thought - I think you will find the best hire the SEC has made in terms of coaches/coordinators the past few years will end up being Matt Canada. He fits LSU's roster and personality perfectly, and that will lift Ogeron's profile as long as he remains the offensive coordinator there. Thinking about what he did with Pitt's offense last year and that he now has Guice is scary.