It definitely does. It values SP more in the PF slot. It also affect rebounding. I don't know the exact algorithm, but rebound values are weighted differently per position. It's something like C REB * 0.8, PF REB * 0.6, SF REB * 0.4, etc, where C REB = that player's REB rating. Rebounds are also affected by IQ and defensive positioning, but the REB ratings are valued differently in each position.