THIS. This, this, a thousand times this, a MILLION times this.
It's. Not. Just. Us.
That said, Greene might have a point, seeing as though the folks who actually make the rankings refuse to acknowledge this.
Anyone is free to play cupcakes out of conference. A lot of teams do it. The difference is that Alabama won't get dinged for playing a MAC school because Alabama's in-conference schedule every single year is guaranteed to include LSU, Auburn, Arkansas, Texas A&M, both Mississippi schools, and Tennessee (a result of the permanent rivalry clause). Throw in another conference game that may well be Florida, Georgia, or South Carolina, then throw in the conference championship game.
Boise State used to whine and stamp their feet every single year because they
would get dinged for playing MAC schools. Maybe it's just me, but that probably has something to do with the fact that they were playing a pathetically weak WAC schedule in-conference, then playing a non-conference schedule that looked like they played in a good conference. They'd say "Look, we played Oregon!"...and Miami University, Tulsa, Bowling Green, and UC-Davis (2009); or maybe it was Bowling Green, Southern Mississippi, and Idaho State (2008); or maybe it was Washington, Wyoming, Weber State, and Southern Miss (2007).
And right now, the B1G looks a hell of a lot closer to the WAC than it does to a conference that's actually, y'know, good. The voters do recognize this. That's why OSU is where they are and not higher.