It's not. You present ONE way of measuring it, and I've typed a lot of words over the last couple of years about how the differences in conference size and how these rankings are measured can distort the truth. Not to mention people simply disagree. What makes a conference best.....how good the teams are towards the top, or the teams that are at least playing in the postseason? Or depth from the first team to the last? Different strokes for different folks. The Big 12 consistently underachieves in the postseason. That is a fact as well, but one you choose to overlook.