Not to be too pedantic, but you had a misplaced modifier in your sentence. I think the question is this (and please correct me if I'm wrong):
How hard is it to obtain residency in primary care if you graduate from Ross?
(i.e., Ross graduates receive full medical degrees, not "primary care" degrees, and have the same technical qualifications as do U.S. MD graduates)
ANSWER: Not that hard at all. 96% of Ross graduates place into a U.S. residency. About 70% of those placements are in primary care (i.e., Family Practice, Pediatrics, and Internal Medicine) directed residencies. In fact, one could probably say that there is a clear trend towards placement in primary care.
-Skip
MS2 Ross University