Halter and peformance halter are the same thing when it comes to what you do in the ring. They are both based on the horse and the horses conformation.
Where showmanship is all about the handler. Your horse could be a trainwreck and still win in showmanship. As it is not about the horses conformation it is about how the handler presents the horse.
-I'm so busy... I don't know if I found a rope or lost my horse.
-An Armed Man is a Citizen an unarmed man is a subject.
-Where ever free speech is stifled Tyranny will reign.