The shot fraction graph doesn't hold any water. Ray Allen's shot fraction is likely to be the highest when his teammates are performing poorly -- thus he has to

The shot fraction graph doesn't hold any water. Ray Allen's shot fraction is likely to be the highest when his teammates are performing poorly -- thus he has to take on more of the burden himself. The effect may not be due to him at all, but rather that when 4 players are playing poorly, the team tends to lose.