I think with > 90% certainty that I could pass an md fp board exam. when studying every 6 yrs for my pa recert exam(which is a primary care exam) I use a text for studying for the fp boards. I pass all the practice tests. doesn't mean my training was equivalent to a 3 yr fp residency. those in the know will tell you: it's the training, not the test.
I don't disagree with your statement. I never said "it was in the test". In fact, I said the opposite. In order to pass the test, you've got to have the training. Now, taking the FP board exam by itself and passing it doesn't mean you could have passed step 1,2/cs,3, etc. But, if you happened to pass steps 1,2,3, completed a residency and passed your board cert, then I'd be confident you've had the training based on those accomplishments alone. I wouldn't need to know the details of "how" you were trained so long as you had made it over ALL of the required hurdles.