I think I figured it out, guys
Batman Begins $206,852,432
Jumper $80,172,128
TDK $534,858,444
Ghost Rider: Spirit of Vengeance $51,774,002
TDKR $448,139,099
Man of Steel $291,045,518
If you're a studio exec and someone wants to get a superhero movie made, you're probably gonna ask if the guy who is batting .667 on movies grossing over 100 mil is available to work on the story or write the screenplay.
Of course, nerds are mostly to blame, because they'll go see fucking ANYTHING nerd related, even if they just want to bitch about it. Case in point...
edit: left out the Blade movies he did, but that was a) before he was somebody, generally speaking and b) back when superhero movies didn't really gross like gangbusters.