system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel/DC] So many characters are geniuses. If every superhero and villain with genius intellect had instead average intelligence, how would their worlds be different? What events would have changed?

This is assuming everyone keeps their non-smart powers.
gpt
Most of Marvel never happens. The FF never go into space, because Reed hasn't invented an experimental rocket ship. Bruce Banner never invents the Gamma Bomb and doesn't become the Hulk. Tony Stark never becomes Iron Man. Hank Pym never invents Pym Particles and doesn't become Ant-Man, or make his girlfriend the Wasp. Professor X doesn't invent Cerebro, and has a harder time tracking down mutants. Doctor Doom is just a powerful wizard. 

Despite the best efforts of Thor, Spider-Man, Doctor Strange and Professor X, this world gets eaten by Galactus.