The one scripture that Trinitarians find difficult to explain away is found in Paul's words at 1 Corinthians 15:26 - 28:
" For he 'has put everything under his feet.' Now when it says that' everything' has been put under him, it is clear that this does not include God himself, who put everything under Christ. When he has done this, then the Son himself will be made subject to him who put everything under him, so that God may be all in all."
On the other hand, the simplistic explanations of the Watchtower do not seem to satisfy why Paul also said:... "Christ Jesus: who being in very nature God (Footnote: in the form of God)...and "For in Christ all the fullness of the Deity lives in bodily form,...."
The truth of the matter probably falls somewhere in between. Perhaps, as humans we can not fully comprehend the spiritual relationship of Father and Son. Maybe we were not meant to do so. Afterall, how can physical man begin to understand the spiritual realm? But that being said, it seems clear that the revealed position of a Father and a Son is something that every human can understand. And that is how God and his son are presented to us in Scripture. Dogmatism on either side of the issue only breeds contention and contempt. Both are not Christian qualities.