Slim -The gospel of John is especially clear in presenting Jesus as an angelic messenger from God, as senior scholars such as John Ashton and Adela Yarbro Collins have noted. JWs are far closer to John in their understanding of who Jesus is and his position than the later Trinitarian formulations, or the intermediate Neoplatonic formulations either, for that matter. Second century apologist, and later Trinitarians were steeped in philosophy, and obsessed concepts of essence, abscission, substance and so on. There’s none of that in the gospel of John itself. Jesus is simply the obedient Son of God, his firstborn.
Making the most important verse, at least to believers, in John all more significant.
John 3:16- for God loved the world so much that he gave his only-begotten son...
Any parent understands that sacrificing himself for others is only outdone by offering up their son. It is in fact nearly impossible if not impossible to fathom giving up a son for he would be too valuable to give up.
But the point is that the significance John attempted to communicate in 3:16 is lessened when the simple non academic concept of the separation between father and son is disregarded.