It would be easy to argue that Gulph Mills greens are some of the best (top 5) in the deep local field (only #9 has never excited me as a low ball player). Lots of top notch architects in GMGC’s pedigree, but the Maxwell and Ross originals are the best.
I think the ease in reading undulating greens vs. sloping greens is more a matter of what one is most familiar. Give me sloping poa greens and I am all good give me undulating bermuda and I am over thinking everything.
I also don’t see as many putts roll off undulating greens as I do sloping greens. Plus undulating surfaces seem easier to tweak if required, the tie ins often no longer work or don’t look right on a softened sloping green.