Not true. The beginning semesters of preclinical classwork in chiropractic school are practically the same as in medical school: Gross Anatomy, Biochem, etc.
Here's the curriculum at New York Chiropractic College: http://www.nycc.edu/acadaffairs/dc_curriculum.pdf
After the precilincal studies prospective MD's and Chiro's branch off into their respective practical studies.
Thats BS I am currently a med student. I have friends who are chiropractors. They did not take pharmacology and the courses they were taught were not in the detail as were expected of me in med school. While in chiro school they have lotsa time for fun. I study my arse off constantly. I have no free time!!
let's see; med school is usually four years and the first two and part of the third are usually basic science. so you think chiros get the same anatomy instruction as surgeons, and the same pharm instruction as bench researchers?? maybe they share a few course titles, like high school has English, which both the future dropouts and future PhDs take.