I've seen a critique of Job's "Buddhism" discussed quite a bit, but it's important to consider that the soteriology of Buddhism and Christianity is radically different.
A major difference is the time scale and way with which salvation occurs. Christianity focuses on the realization that Christ is the savior, and appropriate adjustment in behavior in a single life time. Buddhism on the other hand is a progress in realizing the dharma over many lifetimes of effort.
Paul's conversion happens instantly on the road to Damascus, his change in action is immediate. The salvation of a bodhisattva occurs over the progress of many lifetimes effort, each new lifetime being shaped by the actions and desires of the old.
The point being that the binary saved/damned dichotomy used for judgement in Christian theology (ie X is a bad Christian) doesn't make any sense in a Buddhist context. A "bad buddhist" makes no sense as each person is simply working out the consequences of past actions during each successive lifetime until the dharma is finally realized. (edit: just a note that this 'progress' itself is a massive over simplification itself)