To my way of thinking, a Christian is a "follower of Christ". Jehovah's Witnesses are "followers of Jehovah".
That is a very valid point.
I think that in terms of creeds, thet are CHristian in the since I showed above BUT in practise, that is harder to accept.
The thing is that there is a direct command from Christ in Acts 1 that states two very crucial things:
1) We are NOT to try and figure out when the end is, that is God's decision alone and NO ONE will know or should try to "guess":
7 He said to them, “It is not for you to know times or epochs which ( N ) the Father has fixed by His own authority;
2) We are to be witnesses to CHRIST:
8 but you will receive power ( O ) when the Holy Spirit has come upon you; and you shall be ( P ) My witnesses both in Jerusalem, and in all Judea and ( Q ) Samaria, and even to ( R ) the remotest part of the earth.”
It is thought provoking that the JW's break those two direct commands from Christ before He left.