Nah, german propaganda loved Carius too. My feeling is that its because Wittmann has his famous incident at Villers Bocage, and not much else. Many seem to believe that his 25-30 or so kills at Villers were all tanks (I believe around 15 of the kills were trucks and APC, ie, defenseless vehicles), and most people forget that shortly after the engagement, he managed to get himself, another Tiger, and a Panzer 4 knocked out when he charged headlong into the actual village, and lost all 3 tanks to British 6lbers.