From a med student's point of view, which doctors are the lightweights?

It has to be the case that some fields of medicine are regarded as much heavier than others. I would guess that brain surgery is right up there. Other guesses: heart surgery, lung cancer surgery, surgery on newborns. How about diagnosing mystery symptoms as House does? I likewise suppose that some fields are regarded as less challenging: dermatology? allergies? anesthesia?

Here’s my question. If I were an average medical student, hearing the specialties that my colleagues were choosing and heading for, seeing which the most brilliant and ambitious students chose, which are the fields that would make me think “lightweight”? Which of my doctors are lowest in the status hierarchy, not because of their reputations but just on account of their fields?

Yes, I know all medical professionals are deserving of respect. That is not what I’m asking. I just want to know: if peers look up to their colleagues in the toughest fields, who’s down there looking up the most?