Mentioning Pyramid, I also checked the charts I have for the June-November 1978 run that aired on GSN and allowing for the fact that some weeks were incomplete in that stretch, there was indeed never more than two wins per week, and out of 85 shows or 170 times at the Winners Circle, there were 22 wins (and two of those were Friday $5,000 tie wins with the celebs playing for the two contestants who'd both come back on Monday).