But that's the thing: they probably think that everyone's a sinner and everyone needs saving, and the way that happens is through Jesus.And if that's the case, then I am not a sinner as I don't do anything they don't do, thus I'm not in need of "saving".
Anyone and everyone would fail the test if judged for their sins. However, since they have faith, they're exempt from the test. You don't have faith, so you're not exempt. That's the idea, anyhow.