Ed,
The ridge on #3 will deflect the ball to the left side of the fairway, which leaves a more uphill approach, but more importantly a tougher angle into the narrow green - which ideally should be approached from the upper right hand side.
The left hand side of #4 green is a punchbowl which will funnel putts into that small area. Therefore, you can be a little more brash if your ball is at the front or back of the right hand side of the green, and use the backstop provided on either side to get the ball nearer to the hole. Had the pin being tucked there either day I played, I would not have known where to play!!
TK