One time I had a C with poor JS and IS, but great PA (10) and FT (16, I think). In a close game when he played on SF or PF, in the last minute he started shooting on every possession even thought there were much better shooters around him. At first I was baffled, but then I understood the coach wanted him to get to FT line. He did two times (I didn't win that game). However, this particular game made me think you are right with your theory, but I'm not sure completely.