Strokes Gained (Table 5-2)

So if I understand this correctly the pros are expected to play par on each par 3 under 160 yards and are happy (theoretically) with a par on any par 3 over 160. 

The same goes for par 4s under 400 and over 400 yards and they expect to at least par every par 5, whatever the length is?

And another conclusion would be that if you get up and down from any distance from the green every second time you are almost pro tour good?