You want the code that I used to do the match-patch? You can get the google-diff-match-patch online, but you have to modify it to do a word-level diff. The google-diff-match-patch is a character level diff, and it works quite well. To do it for words, you have to tokenize each verse into words, then map them to a unicode character, diff the unicode char sentence, and then map back to the words. First you have to define what a "word" is... and its tougher than it looks. For me, each space is a word, and so is punctuation, as well as what you would consider a normal word.
I have just used GNU wdiff for the purpose (I'm a Linux geek). But I think the differences are too big to analyze without major work even at the word level. I seem to remember that more verses have been touched than not touched.
OH, and welcome to slii we would love to hear your ( less technical story )
Hmm, my story. I don't know if there's much of a story. Also I don't quite know where I should post it, so perhaps I'll hide it here ;)
I've never been a Witness myself, but I've talked with them a lot. I'm a Christian, perhaps mostly Lutheran. You wouldn't do too much violence by calling me fundamentalist, though I do like to emphasize that the fundament is the blood of Christ and God's Word, not biblical law.
JWs and Mormons are a topic I've had to research somewhat both to be able to tell them how wrong and misled these poor people are from my Christian perspective, as well as to talk with people who've had encounters with them and have got doubts about things like what the Bible really teaches. Comparing the JW texts from different years might be a useful tool here too.
I used to be an atheist until I was 18 and actually for the first time had contact with people who really believe (I live in a fairly secular Scandinavian country, but still I don't quite understand where all the Christians were for those 18 years). I wanted to distance myself from those I might call more militant or ridiculing atheists, and since my new aquaintances also told me that I cannot expect to reach out and find God but need to ask for God to find me, I figured out that it would actually be kind of dishonest to "not give it a try" and pray and read Bible. Sure, it felt foolish, still believing there to be no God, but hey, there's no harm in praying if there's nobody to listen, is there? Well, I ended up believing after some of my prayers were answered to such an extent that even my stubborn mind considers it too much of a coincidence. I also think it's the only way I could have come to believe. Now I have almost as many years behind me as a Christian.
I'm a computer scientist and programmer in my 30s. My geekiness extends to religious matters too; I'm often mistaken for a theology student. I think I know my Bible quite well; well enough to see through JW distortions, anyway. I bear no enmity towards Witnesses or mostly any other religious sect. Mostly I pity them and feel sad for them (then I'm sure at least some atheists think the same about me). I see them as victims, and it seems to me that many JWs I've talked with are sincerely interested about finding out the truth - it's just the WT society that makes it hard. I do wish to work against them getting new converts though, and for the current members finding they've been betrayed.
Actually I think the way I landed here on this forum was a consequence of me wanting the NWT in my phone's Bible software (I don't have that yet, but I think converting what I have to the Sword format would be a job of an hour or two now). Thinking about whether they change the NWT text (other than the newest rather complete rewrite) led to the idea of comparative study of Watchtower Library versions - a few months ago I wasn't even aware they release such a thing.
My most extensive contact with JWs comes from them coming to my home nearly weekly at one point; I think we were going through the "What does Bible really teach?". They had come to my door for a few times, and somehow they always managed to come at the most inopportune time, so I proposed that we schedule the meetings beforehand. I think they just might have read a bit too much into that :-) In a curious coincidence they once managed to come at the same time as some Mormons, who were also visiting me regularly at that time. I think my motivation was twofold: First, even if I feel hopeless, I think it is the right thing to try to show them some Christian love and to try and show they are misled. Second, the time they spend talking with me is time they don't spend talking to someone potentially more vulnerable.