Err ... before I even take this "test," how is someone "smarter than an atheist" if he/she knows much about religion? That's a stupid metric. I don't know much about Jewish or Catholic pomp and circumstance, and I know for a fact I'm smarter than some atheists, Jews, Christians, Buddhists and Muslims. According to this test, however, that someone knows Jews celebrate X on Y day means they're "smarter" than me.
Again, stupid. Someone knows a handful of things I do not; then, ipso presto, they're smarter? LOL. Look up the "hasty generalization" fallacy.
Besides, the ability to retain factoids isn't a proper measure of intellect. That's more the stuff of the ability to learn and adapt than anything else.