I think you're just being stubborn. If not Volquez, then look at any other time the Blue Jays got beat by a good pitcher this year.
Most hits, especially extra base hits, come against mistakes. The hanging curveball, the fastball in the middle of the plate or the pitch thrown in a hitter's known hot zone. The better pitchers make these kinds of mistakes less frequently. Plus, when they do make mistakes with location, they can sometimes get away with it as long as they have "Plus stuff"(speed, movement etc). Whether it's Ryan goins or Josh Donaldson, hitters do not have the ability to turn a plus pitch, with good location into hits with any frequency. The difference between JD and RG is that when there is a mistake, JD will rarely miss it. This is why good pitching beats good hitting.