The first issue here is use of use of the word "revealed" religion, which was completely well sourced, but you have reverted (and again, you have also done some massive modifications without any consensus at all), to show some two theories. Your whole argument is based on one sentence from one source, while I would provide several references below. But, before that, your one source does not even contradict it being a revelation. 

From your own one source:

Page 78: "...Guru Gobind Singh's work is best understood as the fulfillment of Guru Nanak's revelation. The Sikh organization had taken on the semblance of a State during..."

So your own source is describing it as "Guru Nanak's revelation". Now, my addition was well-sourced, and I can add here tens of other sources. But, I believe, at this point, there is no need to even share them, since your own source agrees with revelation. 

Next, you keep quoting the sentence on "not being Prophet, but illumined soul". As per your own definition, "Prophet is one who utters divinely inspired revelations, believed to have come from God". In this sense, since your own source says revelations, it is completely fringe and weak to consider even the "non-Prophet" aspect as reliable. Especially when there are 10s of other reliable sources that also use the words "revelations" and "Prophets". And further, again, even in your own source, when describing "Guru", the author quotes:

"On account of his divine prerogative and attributes the Guru, though human in form, is godly in spirit. God speaks to humanity through him. God enlightens the seekers of truth through him and his word."

The author also states, "Guru Gobind Singh tells Bhai Nand Lal .... (Guru is) the Light which is eternally God and represents God's Being in pure form. It is because of the consummate perfection, that God is in the Guru and the Guru is in God." 

So, I have not even brought it any of the other 10s of sources, and your own single source is so weak (and on the contrary, it actually supports "revelations", "God is in the Guru" "God speaks to humanity through him"). As I had said before, it is you who needs to get consensus before your massive unexplained edits that you keep performing. 

And finally, as a general advice, the fact that Sikhs consider the Gurus to be direct messengers sent by God, and the Guru Granth Sahib to be the word of God, is one of the most  basic and fundamental beliefs in Sikhism. I am surprised you are not aware of such a basic and fundamental aspect.