12f Mane said:
https://en.wikipedia.org/wiki/List_of_highest-grossing_concert_tours#2000s
DMB does ~40 shows a summer tour each year. U2's top selling "tour" was 110 shows that spanned into 3 different calendar years. But they also go on breaks for sometimes multiple years without a full tour.
It still is incredible and their gross on that averages out better, but I think the point is that the argument can be made...just depends on what someone thinks is more impressive...a mega band doing a mega tour or a band that tours every single year for 2.5 decades? I don't know the answer, and my guess is it depends on who you ask.
There's a certain difficulty that comes with having to be on top of your game in a live setting year after year year. If you falter, the numbers will fade.