In my opinion Bruce Banner is better scientist than Tony Stark. Stark just focused on mostly is suit and technology invention, but in of scientific knowledge Bruce is better if only he has more time rather than being the Hulk most of the time

Reading the comments shows that you guys don't see the full picture of things, minus everything Batman is still a regular human who learned everything by himself, not born with he had to go through hell to get those skills he has. As I said he his a normal human with all our flaws that means he carries to much responsibility to even worry about himself , they say with great powers comes with great responsibilities the guy has no powers and still carries does responsibilities