Here's a difference I can see:

Ted Kord was an MIT geek. Wasn't born wealthy (not until after he had inherited his uncle's business). He turned his uncle's small laboratory firm into a business competing with STAR Labs and LexCorp. Not bad for a rather common smart guy.

Bruce Wayne and Tony Stark were both born with silver spoons in their mouths. Sure, they had some bad breaks in life, but they already had most of the advantages as well. They're definitely uncommon by any standard.