I don't see what the problem is. Liberty National is one of the new, very difficult, high profile, big money projects, tailor made to attract professional golf tournaments. Can you imagine how Bob Cupp and Tom Kite feel about this opportunity? A chance to build a big course from a landfill, with a big budget, right on the water with the Statue of Liberty in the distance? I'd bet they put their heart and souls into this, making it the best they possibly could.
Have you ever heard of a par 70 course with a 76.0 rating from the back tees? That's really hard.
I've played Pumpkin Ridge's courses many times, so I am familiar with Bob Cupp's work. To summarize, I'd say he builds golf holes with solid strategic value. At Pumpkin, the best line of approach on par 4s and par 5s is almost always achieved by driving over a fairway bunker, or driving as close as possible to that bunker. Also, his holes are not "quirky". Quality shots are rewarded with a good result. His courses are eminently fair. We here at GCA may not regard that as a good thing, but the pros will.
I think Mr. Cupp's design philosophy has matured as well. Did you see the undulations in the 17th fairway on the website? None of that can be found at Pumpkin Ridge, where most fairway lies are level.
Also, for $500k and $25k per year, I bet they keep that course in fantastic shape. Not essential for you and me, but most people love that. Not that they're going to fill the membership at that price. NO way.
It's not quite my cup of tea, but it looks and sounds like a fine course, hard but fair.