Well, the god of the Christians doesn't seem to know that as there is a commandment written to not worship other gods.
Either many gods seem to have missed the memo that they are identical to all other gods of their type or your conception of religion is more about you than the religions that actually exist, and I would bet on the latter.
I would bet that humans, especially in the early times that interpreted all of the now current religious texts - were poorly educated, biased, and also human. So ... there were "additions/mis-translations/an individuals belief/better if phrased this way" type of interpretations over thousands of years.
My bet... in the grand universe scheme of things, a creator doesn't give two craps about which human created, modified, "game of telephone" religion a person follows. As long as that person attempts to be good, and improve themselves, and kind. And ask for forgiveness of mistakes.
I believe G0d is smarter than all of us, and looks past all these individual human infightings of "my football team (errr religion) is better than yours" type.