It might all have to do with the equipment, but somewhat it does. Voss and Duke could have sweet deals with anybody to be a staffer and to me them choosing AMF says a lot. They believe in the product and have scored with it. They wouldn't be using it if it was junk and I don't think they would use it if they thought something else out there was better.
Honestly to me it doesn't matter, but I know many that will just want to throw them because they saw some of there favorite bowlers using it and better yet winning with it.