Mark,
To me it is patently obvious that BD has to come in at #4, if one is to rank them. I suspect that, had TD built PD first (or CC build BT first), DMK would have done things differently at BD.
I once told our son (our oldest) that I would be a better father for the younger ones than for him. He bristled, then listened as I explained why. I would learn from him and his sister (4 years younger) and so forth. I didn't understand that the youngest would learn from the older ones, too, making me look better than I am!
Back to the golf. The 2nd course comes in, sees the first and says "we need to do things better." It was TDs first huge chance and he wasn't going to botch it. CC would have built an amazing course there, too. I suspect DMK would have built a better course on the PD land than the BD land had he gone second, although I don't think it would have been as good as PD is.
By the time they got to OM, the whole coterie (Brad Kline's term) was in a rarefied place. Mike Keiser knew way more about building courses than he did when he and DMK worked on the first one together.
BD has weak holes. I don't think the other three courses do (and I haven't seen OM yet.) It's the case of a kid being stuck in advanced classes with three savants that are going off to MIT, Berkeley and Princeton...the 4th kid will do just fine at Wake or Vandy or Rice, but people somehow can't help but judge her/him based on the other schools.