That question betrays profound ignorance about Islam in general and Islamic Sufism in particular.
Comparatively to other religions like Taoism, Zen, Buddhism, Confucianism, etc, the Quran is very basic in terms of if we push people in one direction, they will go that way; the reality works 'for every action there is an equal and opposite reaction', so it is very naive in comparison.
Tho some of the Sufi writers then have more metaphysical concepts from the eastern Dharmic understandings, this didn't start within the Quran alone.
You are, or have been Muslim? You have read the Qur'an? Do you believe that Allah SWT is the one God?
I accept the Quran as a testimony, and have read it multiple times... I know the One God Most High, which is defined as Allah in the Quran, and I'm a loyal servant.
Judaism uses the Tanakh as its foundation. It doesn’t have many things wrong when compared to the Tanakh. Unlike Christianity which certainly does have things wrong when compared to the Tanakh.
The idea you don't know Christianity (
John,
Paul, and
Simon) is purposely made up, and fits prophecy in the Tanakh; shows that your comprehension isn't at the level of the Tanakh, which proves the point.
That right there tells me all I need to know about your feelings on the topic and also tells me anything said to point out what they may have right will not even be considered.
Assuming I'm assuming isn't wise...
Plus it even states the reason for asking the thread, is to see after 'years of study' if there is anything missed.
But as a point of curiosity, who are these theologies with "more advanced understandings"?
Taoism, Zen, Buddhism, Dharma, Jainism, Sikhism, etc.
In my opinion.