I think Invincible is a better blood-and-guts superhero satire than The Boys but man this show has no rules whatsoever about what does and does not kill a superhero, or when a punch has zero effect versus exploding their skull. It's totally random what damage they can absorb.
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They're just as strong as they need to be for the fiction to be cool at any given moment
Also I don't think Invincible is satire
Either the incredible hulk can punch a star to death, or Thanos can sucker punch him, but not both.
A poorly directed writing team'll do that though.
Both Invincible and The Boys shows are better than their respective comics, which I think is really cool!