Qur'an, Islam and Context

I have recently developed some interest in comparative religion, in particular between the teachings of Vedic scriptures (I have taken only Bhagawad Gita for now) and Islamic ones (Quran only for now). Given that I have just started these are some preliminary thoughts. In short I would say that the basic difference seems to be between Bhakti Yoga (devotion toward the Lord borne out of love) and Bheeti Yoga (devotion towards the Lord borne out of fear)

The first impression upon reading these two Holy books is, Bhagawad Gita was spoken by the Lord and Quran was spoken by an inspired prophet/messenger of the Lord. Both propose God as One and Supreme, the one without a begining nor an end. But, in Gita the Lord says that people approach Him in numerous paths, but in Quran the same Lord seems to say that there is no path other than Quran. While in Gita the Lord says that He comes down Himself at times, the followers of Islam outrightly reject the idea of incarnation, and the idea of God "coming down". Despite the similarities between the teachings of these two great books, the followers fight over the difference more than coming to terms based on the similarities. So the immediate question that comes up is if both are from one God then why do their followers differ as much as they do? Given the nature of the topic I am confused about the scope of this posting. So I will try not to dwell too much into credibility of each one's views on the other at this point. I will try to look at the nature and the reason of revelations only.

What can be understood about the revelations of Quran? First of all, as acknowledged in Quran, it seems to be an extension of the nature of revelations made in the preceding "Christianic" or "Jewish" scriptures. It was revealed to an uneducated, illiterate, but enlightened Mohammed (PBUH). The Prophet (PBUH) then transfers this to his companions who in turn were illiterates and uneducated. To highlight this point, I have heard several Muslim scholars (ex. Deedat) agree that there were only about half a dozen (6) literate individuals in the whole of Arabia. So it appears that the Lord revealed the Islamic law for the less educated individuals, pertaining to a particular geographical area, depending on their level of intellectual capacity. It has very little discussion of soul and its attributes while the main topic of interest of Vedic scriptures is the soul and its relationship with Lord, the Supersoul. Islam for a student of Gita appears more like a code of conduct (one like Manu Samhita) rather than a spiritual text. Moreover, Quran seems to be based on a bodily concept of life while Gita is based on the concept of a spirit soul. Given that the perspective of a material body is much easier to understand for the lower intellect individuals, Islam is for the more less enlightnened one eminating from the same Lord.

The above text is a kichdi, I know, but this is my first non-edited version that we go through umpteen changes before taking its draft form.