I find this posting of scores and the legitimacy of such data absolutely mind boggling. I have played casual golf and competetive golf, the difference is enormous. I do believe that in 90% of casual rounds Mulligans are taken, putts within the leather conceded and other small infractions incurred. Handicaps should be based on competive rounds only. If you have a cheat in the club, do as the Brits do, allow the the Club Secretary or his equivalent in the US to lop off some strokes.
If the player plays casual golf at all times and wants to play you for small stakes, caveat emptor.
Bob