>>212672985>Comic book films are front loaded so Superman will drop more than 60%Let's test this claim on the recent years of the MCU, which is in an undeniable down period.
>Thunderbolts*: 56% (average, especially off a soft opening)>Captain America Brave New World: 68% (terrible)>Deadpool & Wolverine: 54% (excellent considering it was a massive 211M opening)>The Marvels: 78% (obviously, one of the all-time worst, especially off a terrible opening to begin with)>Guardians of the Galaxy Vol. 3: 48% (excellent, off a strong opening)>Ant-Man and the Wasp Quantumania: 70% (atrocious)>Black Panther Wakana Forever: 63% (bad, but off a massive 180M opening so a little inflated)And so on. So all I'm really seeing here is it varies from audience reception and the size of the opening. There's no hard rule particularly different from other summer blockbusters.
As for similar domestic openings, Man of Steel's opening is very close to GOTG Vol. 3, which as you can see above, dropped 48% while MoS dropped 65%. Other similar comic book domestic opening totals to MoS would be Thor Ragnarok, which dropped 53%, and Spider-Man Across the Spider-Verse, which dropped 54%
Also on a slightly amusing note, Avengers Infinity War is on the same ranking, grossing about even with MoS...on its SECOND weekend (a 55% drop, pretty extraordinary for what was then the biggest opening weekend of all time, at 257M). Incidentally, Avengers Endgame, the still highest opening ever at 357M, still dropped only 59% on its second weekend.