I the world of Quality Control, there's a difference between completeness and correctness. A thing is complete when it has all the desired features. it is correct when all those features have no bugs.
As far as that analogy goes, 3e was complete, but not correct.
And that analogy, again, may hold for 4e. Very few complex systems are released with no bugs. Even the best testing in the world does not ensure zero bugs will be in the system upon release.