Michael Wittmann
he was one of SS panzer ace. His exploits prove Sherman are no match to Tiger mk1. He basically destroyed a British Sherman company with only his one Tiger mk1 in less than half hour.
Having said that, Nazis germany could have last longer if they had not start building the Tiger series, instead improve on the panzer IV, which was cheaper and easier to build. Unlike now, US then prefer to mass produce lot of cheap stuff and use numbers to overwhelm the enemy.