Whilst it is true that AC/DC's setlists tend to feature many of the same classics, what you say is not completely right. I have seen them live 3 times (1996, 2000, and 2009) and got to hear them play stuff that was not usually featured in their setlists or had not been played live in ages, like 'Down Payment Blues', 'Girls Got Rhythm', 'Bad Boy Boogie' or 'Dog Eat Dog', or had even not been played live before the tour in question ('Get it Hot').
I suspected I would be shot down in flames for that cabaret comment.
Right but all those songs are from their 1970s heyday. Of the songs that are regularly played in their setlist, only 2 are from post 1980 (and one of those is from 1981). How often do they pull out a song from post 2000, or even post 1991? How many AC/DC albums are there where no songs have ever been played live after the tour to promote the album?
Nothing from Ballbreaker, Stiff Upper Lip, Rock or Bust, Fly on the Wall, Flick of the Switch or Blow Up Yor Video will *ever be played live again*.
Iron Maiden are simply not in the same category.
Unless and until any of Kiss, Judas Priest, AC/DC, Metallica, Megadeth, Def Leppard, etc. etc. do a tour where they play almost purely material from post 2000, Iron Maiden are in a different league.
For crying out loud they just did a tour that included a ton of festivals where the setlist opened with 3 songs (20 minutes) of previously unplayed new material, 2 lengthy songs from their absolute low point in the 90s, a song they hadn't played since 1986 before this tour, a song from 2000, etc.
It was absolutely not a setlist for casual punters.
And now this tour that they have announced which has a retrospective element will have just as many songs from their most recent album.
They are quite simply just not that sort of band.