If you woke up and the world had been transformed into a super-nerd dystopia where a demigod-Patton Oswalt forced you to choose only the best superhero to preserve from 100 years of American comics, you would choose Superman.
Sure, the more educated nerd-palate prefers a hero who is less of a boy-scout. (Batman is my pick.) After all, Superman is a little goody-goody. He ALWAYS does the right thing. He has the most complete set of powers: flight, x-ray vision, super strength, etc. He's invincible, except for the whole kryptonite thing.
You would not tell demigod-Patton Oswalt that the ideal superhero for cultural preservation was Jesus Christ. Being honest, Jesus is actually a terrible superhero. Even if you give him the whole walking-on-water and miraculous healing thing, that doesn't give you much to work with when Lex Luthor decides to blow up the sun or Darkseid starts a zombie apocalypse. Apart from the Ascension, Jesus can't even fly. So there's nothing he can do about the whole exploding ...1