Jehovah's Witnesses often claim that Jesus is a god in the sense that Moses was called a god. But, Moses was not called a god. Rather, he would be "as God."

•"Moreover, he shall speak for you to the people; and it shall come about that he shall be as a mouth for you, and you shall be as God to him, (Exodus 4:16).

•"Then the Lord said to Moses, 'See, I make you as God to Pharaoh, and your brother Aaron shall be your prophet,'" (Exodus 7:1).

Why was Moses going "as God" to Pharaoh? Because Moses was given the authority and power to display powerful miracles that decimated much of Egypt. Was Moses really a god? Being "as God" in regards to power given to perform miracles over Egypt is not the same thing as being called "a god" that was in the beginning with God, (John 1:1).

The WTS' understanding of abstract vs concrete has always seemed to be cloudy. Abstract concepts are effete or impotent. Concrete objects can cause effects in the world.
The five attributes of God are omniscient, omnipresent, omnipotent, holy, and immutable. To be God one has to possess all five attributes. One has to ask, does Moses possess and of them? Has Moses demonstrated his ability to perform any of them?