I have no reason to doubt the story, because no one that I know of has ever said to me it isn't true.
I think the reality is that someone who has played so much video poker can have all of these various experiences. I will say this -- I find it hard to believe someone who played only a limited amount of VP could experience so much. So the more "stories" I hear, the more I have to think that Rob did a lot more playing than he admitted to. Especially his recent run of big wins and royals.... I doubt they all happened in just a few hours of play.