In the current volume, there are 4 40s and 2 39s (4 with 10 and 2 with 3 10s and 1 9). There is 1 38, 1 37 and 1 course ranked 10-8-9-8. In other words, 6 courses that are certainly 10s, 1 that is borderline, and two more that flirt with it in the eyes of at least one rater.
There are four courses that total between 34 and 36. One of those courses is a "flirt" from above. 34 would be an 8.5 average, and we have 13 courses that rank between 34 and 40.
Thus is born a ranking of courses. Numbers and statistics don't lie, except when they do. Four gentlemen conspired in these volumes, but not all four have played all the courses, and certain ones might be labeled "Golfweek-style" or "Golf-style" or "Golfdigest-style." If the first book (all Doak) caused some confusion as to ranking/non-ranking, this series will go it one better, as four unique pairs of eyes are at work.
As far as the 100 trips notion goes, I cannot take the time to refute or support that assertion. Certainly, one can nail a passel of courses with one planned excursion (Long Island, Westchester, Philly, Toronto, Bandon, ad finitum) so it seems likely that 100 trips won't be necessary. However, if you are able to schedule 100 trips that include golf in this lifetime, I salute, respect and envy you.