Obviously Stark, his whole character is about being a genius rich guy with a hi tech suit.
don't you think stark character is inspired by Bruce!? in common things 1. both are rich 2. both use gadgets technology 3. both are smart rather diplomatic bears leader qualities. 4. both parents are killed.
Nope, Bruce is smart but he's not a genius, he doesn't rely on his gadgets as much as Stark does, plus he didn't invent them like Stark did on his own. Take the suit off Tony's back and you can beat him up. Batman can kick your ass even as Bruce
Tony, though he's also richer I think.