The Watchtower says: "Thus Jesus illustrated his own position as one being sent by God to do God's will, just as a father sends a submissive son." Should You believe in the TrinityThe watchtowers example is heplful: A human father can send a submissive son, yet this does not mean that his son is inferior by nature (ie. less human) than his father. In fact human sons are always considered equal by nature to their fathers !
A son who comes to you sent by his father should be given equal honor as his father, and should not be demoted by claiming that he is some sort of lesser being by nature than his father.
I was always very uncomfortable with this Watchtower view. I knew what it was like with my son, and indeed me as a son to my own father. In no case could one be said to be inferior to the other. It's simply that they have different roles, but there's no way my son could be inferior to me, nor I to my own father.
Cheers, Ozzie