I think we all understand what you are saying, but the point the poster is making is: When the worst team in the conference plays out their schedule it is slightly better because they do not have to play the worst team in the conference each year (themselves) therefore a team like Bama would have a slightly worse schedule because they do not get to play themselves.
Also it must be noted that the Big 12's strength of schedule i slightly inflated due to the horrible non conference schedule by most of the best teams in the conference. Therefore the only loses in the Big12 is in conference play and of course in bowl games when they actually have to match up with similar rated teams from other (better conferences). It also should be noted that the Big 10 year end and year out plays the toughest Bowl Schedule and no doubt the last 2 years a tougher schedule than the Big 12....you see that happens when you send a team to the playoffs and the other teams in conference bump up one place in the competition. Just to bring some objectively to my argument, here are the non-conference schedules from Big 12 "top teams" from this year (geeze and Iowa got criticized for schedule):
Oklahoma State: Central Michigan, Central Arkansas, and UTSA
Baylor: SMU, Lamar, and Rice
TCU: Minnesota (Sub .500 Big10 team), Stephen F. Austin, SMU
Oklahoma: Akron, Tulsa, and Tennessee (not bad but not great SEC team)