Are you sure? I mean, Stark only ever shows in depth knowlege of engineering and some biology. I've never seen Bruce being that knowlegable with electronics or computers. The only Marvel genius who seems to be smart in multiple feilds is Reed (who's so damn smart he's probably a mutant in that regard, or his streatchyness increased his inteligence as explained in Marvel Mangaverse and Ultimate FF), but even then he mostly sticks to physics and engineering. His knowlege of biology, while impressive, seems to be a bit more lacking that his other feilds. He;s yet to come even close to curing Ben.