Appeal to ignorance, appeal to faith... So many great fallacies to choose from. I think I shall counter with a red-herring fallacy and raise you an argument from omniscience!
Chewbacca is a wookie who lived on Endor, therefore PR must have a direct impact to merchandising. Everybody knows that.
3 points! hahaha.... Sorry, you did not state as opinion. I think I remember also having that discussion a few posts ago. As a GM, I probably would have went with the argument from authority fallacy