Personally my history is complicated.
To paint a picture, when growing up I was part of a destructive cult.
It took time and energy, I worked my way up through the cult regurgitating their so-called truths. Once I was in a position to free myself from it, I did. It took fifteen years to free myself and my parents and find enough evidence to convince them that it was nothing but a destructive cult. Today, none of my previous beliefs I once held form a base in my new perception of reality.
Needless to say if given the chance, I could be called apostate by many religions.
Moral of the albeit brief story? Only that to seek Knowledge that you will, an awareness beyond texts you will need. For religious texts may hint to higher knowledge. Just the same, some close awareness off to seeing things as they are by default. I know I am throwing you a curve ball here.
Each religion has a different perception and distinction of reality. It is all covered in: This post here.
Experience is the only thing between you and understanding what is fake.
Though methods may seem like trickery. The only way to follow the complicated "no path" quest is to PM me.*edit*I was sure I had written: For more information on following "no path" please PM me. This slightly unnerved me because I swear I did not write the striked out text. I will provide you with a link, though it is based upon understanding intuitive abilities, it is the only way to seek what you wish be being able to discern from religious texts (most of what is, seems to be inheirently tainted as such). Along with a brief monologue of what is not covered by the link.
Kudos for trying this huge and difficult undertaking.
No, all religions are not completely truthful. Neither do they lead to the same result. The only thing that leads to the same result is the need to dominate.
The distinctions of atman/anatman are information written down by someone who studied texts and had no clear knowledge of what it means to have reached these realities. I am not making this "wrong" by my words. I am simply saying that much is missed because the persons who wrote about it did not experience it. This disqualifies them from providing real information for people who wish to find an answer to it.
It does provide fundamental information on tenets and vehicles with which to try to accomplish said realities. However, to be totally apostate on the matter from an energetic perspective it is... sorry to say... perfectly worthless.
I say this because the written materials on these subject do provide the qualities that the writers could imbue with the subject. Vedantic writings and Buddhist writings the same are great by their own merit and provide meaning according to the precepts and vehicles inheirent to their own distinctions. Vedantic being percieving through non-dual means and Buddhism through knowledge, compassion and awareness. By their own merits they are not wrong and in these respects that they seek truth they are not wrong by these measures. Writings are only wrong when you seek other truth other than what the original writer could possibly imbue them with.
Yet to understand that, you have to understand the different perspectives, hence why you should read my *edit*post I linked to above.
I should have provided complete explanation an tenure as to why I was not making a religion "wrong" so to speak. If someone chooses to find fault with my words, thinking that that was an attack on the religion itself, they did not read and fully understand my words.