Jeff,
I find the underlying property to be different from that of the BIG course. I won't say it's treeless, but it's close, and the topography is very different, with a major knoll or hill being a prominent internal feature.
The 9th hole probably gives one the feeling that it could be inserted into the BIG course and you wouldn't see a break in continuity or feel, or know the difference in the designers.
If I was going to use a term to describe it, to borrow a phrase from geometry, I'd say similar, but not congruent,
I could be wrong, but I don't think the intent was to exactly duplicate the architecture at the BIG course, but I don't feel that the concept was to substantially depart from it either.