Well, Vegas_Lover, I think Singer said he's won just shy of a million over a period of ten years, which is about $100-thou a year which is very realistic for someone playing $5 and $10 and $25 per coin video poker.
And you are correct that he says he plays correct strategy 95% of the time. So perhaps that 5% "gamble" is what he needs to reach his win goal? By the way, his stated win goal of $2500 per visit is really very modest when you have a player at the levels he plays at.
Why there is so much doubt about his claim of winning about $100k per year surprises me. At 25-cents per coin or even at $1 per coin I would also share your doubts. But Rob told me that most of his play is at the $10/coin level ($50 per push of the button) so winning about $100K per year seems very, very possible. He has already cleared up the issue that he played a substantial number of hours (not the 6 hours that was alleged).
Edited to add:
In a different thread, Rob posted this about his play stats, and please note the averages for his ten years of play:
--I played 427 sessions during my 10 years as a pro. The majority of my winning was done on single-play strategy, $1 thru $100 machines.
--262 of them were my Single-Play Strategy (SPS). I won 217 and lost 45. The average amount won per winning session was $4875; the average amount lost per losing session was $3400. Total net profit = ~$904k.
--165 were a mix between my self-developed RTT, ARTT, Multi-Strike, and 5-play strategies. These all were smaller stakes than SPS, and most began at quarters.
--Of the 165, I won ~80% of those and had an overall net profit of ~$80,000.
In fact, he says he averaged about $90,000 per year playing at these high limits. And over 427 sessions, his $904,000 of wins averages out to about $2,100 per win. These numbers all strike me as being realistic and not extraordinary. They would send off alarm bells if he said he was playing single line 25-cent video poker. But playing at his levels and leaving when he attained a certain win goal makes a lot of sense -- especially if he used his "special plays" only 5% of the time.