IMO, course difficulty is a non-factor as everyone plays the same course. A golf tourney winner is no different imo if he or she shoots an aggregate of 24 under or 7 over par. The lowest score is ultimately the winner altough all golfers prefer the easier set-up..
I found out this piece of golf trivia today: our very own Cameron Tringale is the highest earning PGA tour player of all time (over $13 mil in career earnings) who has never won on the Tour. I would love to know how much of that he would cash in for a victory.