Horse Collar Rule NCAA vs. FED

Was watching the Nebraska-Missouri game last night, and the R's flag on Suh (#93) from Nebraska for the horse collar on Gabbert (MU QB) in the 2nd half got me to wondering if there's a difference between the FED's wording of the horse collar rule and the NCAA's. It appears Suh grabbed Gabbert by the back of the jersey, between the name and the number, and the R threw the flag for a horse collar. To me, it didn't fit the FED's definition, so it made me wonder. Thanks for any clarification.