That's not surprising... The sample sizes of 3-point shots in one game is tiny, so the variance is massive. You don't notice when they shoot 0 for 6 or 1 for 7, but that's also probably anomalous. You do notice the similarly anomalous 4 for 6 or 5 for 7 because it hurts you. At the end of the season, 3 pt %s for sim players don't generally look unusually high.