It could be the simple mistake of improperly rendering his Korean name in the court records.
Cho Seung-Hui instead of Seung-Hui Cho.
These are legal records. Note the form, the DL, the arrest and court records should have all followed the same last name/first name protocol. THe PD enters it as on the DL, and that should have been the court records and the FFL would have done the same check. The ATF noted no descrepancies when they checked the FFL's paperwork.