you are making the mistake of equating brave leadership with good leadership. That's the sort of thing that gets people killed. Witness the first world war as a prime example.
Roald Amundsen= PASS
Robert Falcon Scott= FAIL
Amundsen’s expedition benefited from careful preparation, good equipment, appropriate clothing, a simple primary task an understanding of dogs and their handling, and the effective use of skis. In contrast to the misfortunes of Scott’s team, Amundsen’s trek proved rather smooth and uneventful.
In Amundsen’s own words:
I may say that this is the greatest factor—the way in which the expedition is equipped—the way in which every difficulty is foreseen, and precautions taken for meeting or avoiding it. Victory awaits him who has everything in order — luck, people call it. Defeat is certain for him who has neglected to take the necessary precautions in time; this is called bad luck.