Also germaine are John 20:28; Phil 2:5-11, Titus 2:13 and Heb 1:8. Even when added to all the proofs you cited, that still represents only a fraction of the Scriptural evidence for Jesus' deity. But in my experience, citing Scriptural proofs to jehovah's witnesses rarely achieves the desired result.
Citing the finer points of Gk grammar, such as Granville Sharp's or Colwell's rule, impresses them even less. They simply dig their heels in and hurl inanities such as the original post, which of course is nothing but a straw man that they can easily demolish. Refuting their own wilful misconceptions is an exercise in futility, but it flatters their intellectual pride, which is likely all they have to go on. For this reason, I have long since ceased debating with jw's. When they call at my door, I politely decline to accept their literature, tell them why, then give them a brief testimony. They have a much harder time arguing with personal experience, mainly coz they have no concept of what it means to be 'in Christ'.
If they are genuine seekers of truth, they will find it eventually. They just hafta lift their gaze from Watchtower propaganda long enough to read any one of the many excellent refutations of their theology. Two of the best are 'The Four Major Cults' by A A Hoekema and 'The Kingdom of The Cults' by W R Martin. More personal is '30 Years a Watchtower Slave' by W J Schnell.
Ultimately, no amount of intellectual argumentation is going to bring a soul to faith in Christ. I knew that already despite my own protracted debates with 461, albeit from an entirely different angle. Only the Holy Spirit can convict us of our sin and turn us to look to Jesus for our salvation.