I haven't looked at the numbers, but I bet there's a much stronger correlation between Green's scoring output vs. the Spurs' W/L record in comparison to Bowen's offensive output impacting the outcome of the game, tbh..
The current Spurs are heavily reliant on scoring from all their key players, including Green..Bowen's scoring had virtually no impact on the results of the old Spurs, they were conventionally built from a perspective of roles with a traditional #1 superstar(Duncan), #2 star (Manu) and #3 All-Star (Parker)