Never said anything about SEC dominance being a myth though I don't see a return to what the SEC did from 2006-2013 ever again. But was saying in that span, if there was a playoff system, there is a chance that half of those teams would have lost if it was a playoff system. We will never know that though. But nobody is denying the talent that the SEC produces. It's in the Southeast (and now South Central) US.
That is all that I was saying in my earlier posts. SEC is the best conference but their reign of complete domination is over. But no one is talking about the coaching aspect. Look around the country and notice how all the non-SEC powerhouses have upgraded coaches in the last five years:
Texas - upgraded from Mack Brown to Charlie Strong
USC - off sanctions and upgraded (somewhat) from Lane Kiffin to Steve Sarkisian
Michigan - upgraded from Brady Hoke to Jim Harbaugh
Penn State - off sanctions and upgraded from Joe Paterno to James Franklin
Ohio State - upgraded from Jim Tressel to Urban Meyer
Florida State - upgraded from Bobby Bowden to Jimbo Fisher
Those are all young, dynamic coaches. Meanwhile the best coaches in the SEC are all in their sixties (Nick Saban, Les Miles, and Steve Spurrier). There is going to be more parity in college football going forward.