There's no doubt you are accurate in explaining how the computer arrives at its numbers. How many games in 2007 have teams from Ohio played against a team from any of the Southeastern states? Texas? California? Not enough to have a sufficient sample. 99% of all of those out-of-state games are against teams from states in the Midwest or Northeast-read mostly of the not-so-athletic variety. Lakeland is the only athletic team any of those teams has faced. And that Lakeland team was uncharacteristically weak at QB and one-dimensional, which X's stack defense is designed to stop.
Fact is, what Ohio teams do against teams from Indiana, Kentucky etc tells us little to nothing about how they fare against the best from other places. And, a couple of home games against a handful of teams traveling long-distances to play in front of partisan crowds (The Herbie) doesn't count for much, either.
You appear to be looking for exact science. And I think the athleticism mantra gets overblown. Ohio teams (and not necessarily our title contenders) have faced top teams from the areas you mention and not done too badly.
Ohio teams like Colerain and Glenville, for example, are extremely athletic. Look at the talent they put out. Talent-laden Lakeland nearly lost to X.
Yes, X had homefield advantage versus Lakeland. Then again, Lakeland was a more experienced, senior-laden team with 7 or 8 or 9 major D1A recruits. I think they sent at least 6 to Florida. Florida folks expected a blowout. X ended up being the 3rd or 4th best team in Ohio.
If there were a significant gap in team quality versus the Southeast or other areas and their athleticism, you'd have expected to see it. X took favored Lakeland to the wire. Clear underdog Moeller lost on a controversial PAT to SC #2 Byrnes. Colerain beat Hoover. Elder, who barely made the Ohio D1 tourney, beat Independence. DeMatha is supposed to have lots of D1 recruits and were spanked by X. Glenville took Poly to the wire, losing due to turnovers, not athleticism (they actually had more yardage).
Top teams from the places you mention have faced Ohio teams. Ohio teams have done respectably well. It's not like an average team from the Southeast has come to Ohio and ripped an ohio power a new one. Far from it.
You are speculating.