No it's not a religious question. You and I can take our respective dieties to task by choosing a test problem, then praying hard to see whose diety exists/answers, etc. Most likely, both of us will be disappointed (otherwise I would have had a jetpack by now :-)

Quality of object systems can be tested by posing a computational problem and letting people solve the problem in their language/object-system of choice, we can then rank the answers by various criteria (development speed, code clarity, code speed, system integration, run-time portability, scaling, maintenance costs, etc.)