Due to the enormous volatility in tournament results, structures, and payouts, I can't imagine any validity to a dollar "win rate" for a tournament player. However, I do believe that certain players know with a reasonable degree of certainty how often they will win a tourney and how often they will finish in the money. Further, I think the idea of an hourly win rate misses the main point in playing tournaments, and that is to make a knockout score, not grind out a few bucks "per hour".