Ohio State has more talent than about 3/4 of the SEC and maybe mire than all but 2 teams. Talent still wins games in any conference. Would there be an adjustment ? Sure. Half the reason they do so horrible in vowls against the SEC is because they don't see the same physicality week end and out. Make no mistake they can play here. They might be the one team with enough talent and depth to play and SEC schedule currently.
I think if they were to play in the SEC, they'd consistently end the season 9-3 or 10-2.
In other words, if they had to consistently play Bama, UGa, and now us, they would not consistently win the conference, nor consistently get to the playoffs. They might not EVER win the conference or get to the playoffs (until the playoffs expand, of course).
Just using this season and our schedule as an example, what do you think Ohio State's record would be if they had to play Pitt, Florida, LSU, Bama, Georgia, Clemson, Kentucky, and South Carolina? I included those last two not because they're barn burners, but because you at least have to focus on them, prepare for them...which means you're not preparing for the team that comes a week later.
I'm thinking OSU would have at least three losses. We know they'd lose to Michigan (a Bama-Tennessee equivalent), because they did. We know they'd lose to UGa (because they did lose to UGa). I'm betting they'd have one other loss somewhere in there, too.
The SEC schedule is brutal. They're not used to that. They're not ready for that.
There's a difference between being almost as good as UGa one or two games a year, and having to be that good 5, 6, or 7 times a season.