I'd suggest the biggest advantage modern gca's have is not bigger budgets, more earthmoving equipment etc but that they have the advantage of looking back and learning from all the great stuff that went before, as well as the bad. A lot of modern courses are rightly lauded and perhaps what their designers have done is produced something greater than what went before, and in that respect maybe they do deserve their plaudits, but the ODG's maybe deserve more credit for paving the way for later exponents of golf course design IMO.
If you like, Doak, C&C etc are standing on the shoulders of giants.
Niall