Yes at 1200 rvr they could have done a cat 2 approach. Then an autoland wouldn't be required. We usually brief the approach we are doing and stick with the procedures for that approach. A cat 3 would require an autopilot go around if localizer limits were exceeded. A cat 2 approach would of course allow a hand flown landing when VMC. Company sops don't want us to switch procedures and call outs during the approach. Cat 2 has a DH at 100 ft usually. A cat 3 doesn't. If they had caught the localizer on roll out not usable maybe they were doing a cat 2.