zagraniczniak: That is all true, yet it is clearly not consistent from hole to hole, and in this sense each hole is "juiced" to play a certain way. Similar differences in elevation at Bethpage 5 and 18 clearly do not have the same effect as at Bethpage 15. These are the ins and outs of the game (in the sense of a computer game) that need to be figured out and dealt with to score well.
My memory isn't perfect, but I believe BPB #15 (+28 ft) is significantly more elevated than #18 (+12 ft).
BPB #5 has a similar elevation change (+28 ft,) but it does not have the same slope on the green. When you hit onto BPB #5, the ball typically it rolls forward 3-4 yards. On BPB #15, however, the ball can roll backwards a great deal... anywhere from 3-4 yards from initial impact is pretty common. 7-10 yards is possible, but that will make it gain too much momentum and scream past the hole. This makes it seem pretty consistent, to me, because from 130 yards out on #5, I hit +8 yards, whereas on #15, I would hit +14 from 130 yards out.
I'd say there are a few quirks in the game (the fact that I only hit +1 at BPB #17, despite the +10 ft elevation change being one of them,) and I do memorize how hard I should hit certain shots by simply memorizing +/- a certain amount of yardage, but I think the differences between BPB #5, #15, and #18 are mainly attributable to explainable phenomenon.