Here are the top 20 sagarin rated teams ranked in order of their winning percentage against a composite of: 1. The top 25 sagarin rated teams and 2. The top 50 sagarin rated teams.
This shows you who is a legitimate power against elite competition and who is an over-ranked poser team. A lot of so-called elite teams are posers.
Now, SMU is currently in the AP top 20 but didn't make the list. Their record against the composite index is 4-3. So they would be tied for 12th place.