So, why does it have that effect in his points per game between games where he plays over and under 21 minutes.Too many factors in play for the difference in one shift to have any effect.
Are you saying this is just a random occurrence, and it just happens to correlate with his ice-time in wins and losses?
It may be too many factors for one shift if we are talking about 10 games. But, we are talking about something that re-occurs for around 158 games. Almost all of Crosby's career, etc. That can't be attributed to randomness.