What point exactly are you trying to make? I never said OU's schedule was weak. My argument is that the schedule MU currently plays is not easier than what they'll see in the SEC. I'll grant you that OU's schedule is certainly difficult, as well.
MU's schedule—TODAY—is ranked as the toughest in the country. That will likely come down over the final two weeks, but the fall won't be significant enough to really change my point.
All 10 current Big 12 schools are in the top 13 in sos. The SEC's average: 25. The SEC's bottom feeders are also currently weaker than the Big 12's worst. kansas is the only Big 12 outside the current top 45 in the Sagarin ratings (kansas is in the 80s). Both Kentucky and Ole Miss are lower than ku.
Another way to look at it: the current average Sagarin rating for MU's opponents this year is 46. Compare that to a hypothetical SEC schedule that includes games against all east teams, A&M and LSU in the west, Arizona State, Miami (OH) and Southern Illinois (already on the schedule) and kansas as the 12th game (they are still under contract to play MU once more in Arrowhead). That schedule's average opponent ranking: 53. And that's really a worst-case scenario. If MU were to draw Mississippi instead of LSU as its first west opponent (a best-case for MU), that drops to 63. There's really no scenario where the schedule gets harder.
Of course, that's using this year's rankings. Things can change. As long as the Big 12 is playing 9 conference games, though, its schedules will be among the toughest in the country.