Bob (as are many APers) is not prone to giving away their good plays. It may turn out that Bob hasn't had much success in these one time promotions lately so that's all he has to talk about. Also, he has gotten criticism in the past for being arrogant. Some of that was due to writing about big wins. So, he may be trying to answer those critics. Finally, he may be trying to subtlety dissuade people from going to Vegas to become pros which would reduce competition for good plays.