DA the fuel policy you present does not explain the A330 autoland in 2004. Similar scenario to the QF737. Unforecast fog, alternate available but continues to destination and autolands in SY. On that day QF2, 744 using the same fuel policy, diverts to CB. I'm sure that if ADL had a CATIII ILS it would have been a consideration for both crews in their diversion decisions.\
If a CATIII ILS was available and 1 aircraft diverted to MIA and 1 went to ADL and autolanded, which aircraft was presented with the higher risk? In the black and white world of rules and regs which aircraft would be more correct in the decision that was made? In my mind there is no right or wrong just what do I consider the safest course of action.