The 'God's channel' can be seen in deeds, as much of more so than in words, (...)
It is seen in the representative fact of the 900 languages, ...
What is then boundary between words and deeds? # of languages in which the words are said does not change the fact they are still words. That is meaning of the God's channel - to communicate words from God. In this case words are deeds.
If you were not JW, would the number of languages convince you to summit your life to the org? Even if you knew no prediction had came true?
And what in case there will be other organization with more languages? Will you then leave the JW?
I fully respect your decision, but the fact you presented does not convince me the GB is the God's sole channel. I will not go to a mechanic fully equipped with modern tools who has 0% success rate in repairs.