As others have said its apples to oranges , in August 2008 lost the centre diff lock on our 80 series [would not engage] just prior to hitting the OTL , were towing our campomatic , 1st realised no 4x4 at all after the 1st crossing , 12000lb chinese winch with dyna rope on steel bullbar used 5 times over the length of the OTL ,,,, diff locks can and will get you further and somtimes further into the poo whereas a winch will get you out of it.