Epistemologies of Science and Religion

So, science is universal, while religion is rather local. One relies on an epistemology everyone in the world has access to; the other relies on an epistemology that barely works for that religion. To say of all religions that "each is valid" is to assert an absurdity. If each religion is separately valid, and all religions contradict each other, we are way past postmodernist silliness and out the other side into pure fiction and flights of imagination. It basically causes the very idea of knowledge to be degraded to the point that it no longer has the slightest meaning.