The key difference that shelf life of a quant (or a PM, for that matter), is way, way shorter than the career of an MD. Lifetime earning potential of any dentist is way higher than mine, for example, even though my annual take for some past years would raise some skirts.
PS. Plus, a specialist in medicine makes that type of money easily, from what I hear.
You mean raise some eyeballs? Why would it raise some skirts? LOL