I dunno what kind of weapon/s this mad bugger was holding, when he took on the 3 Taliban machine gunners... but the sight of a red-headed rugby player, who's 2.02M (6' 7½"), and has a face plastered with camo, and a with Super Grunt intensity on his face, coming at you... would be enough to make any dedicated Islamic nutter, forget about pulling the trigger for long enough to make them history within seconds. True Tom Starcevich stuff.
However, the general opinion is, that most living VC winners were all a little crazy to start with (one of my mates is one of the Starcevichs, and I know what they mean).