Maybe your data are out of date. Click on the ranking name to visit the site.
Sagarin has Notre Dame ranked 2nd and South Carolina 5th.
Massey has Notre Dame ranked 2nd and South Carolina 3rd.
RPI has Notre Dame ranked 1st and South Carolina 3rd.
NPI has Notre Dame ranked 2nd and South Carolina 4th.
Sonny Moore has Notre Dame ranked 2nd and South Carolina 5th.
If you are referring to the Coaches' Poll, that it the point of contention that started the argument because it goes against all of the computer ranking systems (and I would argue common sense).
If you are referring to the AP Poll, that was published before last night's loss to the Huskies.