You know, now that I think of it, that pic at the top doesn't make much sense. I've flown out of JFK and LGA countless number of times, in good and bad weather. I can say that it would be very rare to be traveling up the Hudson river with Manahattan on the right while landing or taking-off from JFK.
On the other hand, that would be very appropriate when Landing 22 or 13 at LGA coming in from the south. The only time you would follow this track would be if the weather was really crap at JFK and they absolutely needed to use the ILS 13R and L (I'm talking low ceilings and wind howling straight down the runway).
JFK is what they call a "slave" airport. So is KEWR. KLGA is the "master", which means Newark and Kennedy adjust their configs depending on what La-garbage is doing. That's why the approach seems to change for no reason sometimes when you are landing in JFK. One moment you are doing the ILS 31R, the next you are cleared for the VOR 22L. Newark, or Sewark if you like, is more restricted in that the only viable options are 4 or 22. The shorter runway, being only one, is more restrictive for the heavies (Unless you are Continental, in which case you just sidestep to one of the taxiways

)
So which is it? KLGA or KJFK??

Mariano