Do many students at OHSU want to go into primary care? Absolutely. But, is OHSU obsessed with recruiting future PCPs and teaching a primary care-heavy curriculum? Probably not.
As far as state schools are concerned, OHSU does not operate like most of them. The school receives little state funding, and the medical school admissions people are not going to start crying if many of their graduates end up moving to the east coast and specializing (While this would be bad for the state, it wouldn't be nearly so bad for the school). In all honesty, I think that OHSU's primary care reputation has much more to do with the school's love of non-traditional students than anything else. If you are already 36 with 3 kids, are you really going to long for a decade of neurosurgery training after school is finished? Probably not. Similarly, are you going to be able to ignore your family for 4 years just for the sake of AOA? Again, no.
Many students here (like myself) want nothing to do with primary care, and the school is just fine with that. It also should be mentioned that for every lecture on primary care nutrition that I sat through at OHSU, I had an overy-specialized lecture on neurosurgial pain technique, etc to match it.
And, for what its worth, the 2009 USMLE average for OHSU was an outlier from previous years. Just saying.