Yeah. A person, no matter how much of a "genius" they are, will never be able to be the best of the best at everything. And this goes beyond the scientific side of knowledge: history, literature, art, philosophy, and so on. I find it more interesting to have characters with different kinds of expertise and relying on each other when needed; they can show that these characters are experts in certain topics, but that they are continually learning about the world and about themselves as they move on in life.

(And, in the case of Doom, probably declare how he has always been the best and he already knows his full potential unlike that naive and foolish Richards and that he does not need "help" but a confirmation of what he already knows so that the weak Richards cannot deny how great he is).