You can't look at the match list like that. Reasons for someone picking one over the other is an individual reason. Some who choose IM do not want to do peds. Other want to work in a hospit and others want to do fellowship. For FM people may choose it because they want to treat all ages, loves peds, wants outpatient only, wants to do OB, etc. there is not a single answer to your question. FM are doing hospitalist now. If you are between the two, you need to ask yourself what you want to do after residency. Don't pick something just because of compensation. There are places in this country that family medicine physicians are compensated very well.
Dr Crispy, MD
Board Certified Family Medicine Physician