Without wishing to be unkind but is this thread serious or satire?
Atb
Nope it is, another exagerrated binary choice thread, intended to provoke responses.
But to be fair to the questioner in answer I say "Vive la difference" to both the debate approach and the characteristics of the subjects; each style has their own merits and weaknesses, they are entirely different challenges and not comparable therefore.
But the best inland (hilly or otherwise) courses are, without doubt, inspired by the priniciples and strategies laid out on the links (as expoused by CBM, James Braid and others).
As per the recent "Talking Golf History" podcast the reason the "Grand Slam" is is so important is that to achieve it (over a career let alone across any one-year period, calendar year or otherwise) is that each event challenges these different skills. Those that do it are proven to possess all the skills required as demanded by each of these disparate challenges.