Calpreps supposedly looks at every game in the country but I have my doubts about its accuracy.
I understand the criticisms of Sagarin. But try to look at it for what it is, a measurement of performance in games with Indiana teams against Indiana teams, so out of state games don't count.
TW did a study about 15 years ago that showed Sagarin predicting playoff games around 80 percent accuracy. When you realize that a good percentage of games are won by less than a field goal, that's a very high level of statistical accuracy. It's the best we have and was good enough for the BCS and NCAA for 25 years.