For those who think that I think the Watchtower folks are much better than Pentecostals or other, let me just say that I am against organized religion. Period! Whether its the WT or Pentecostal, Baptist or other, I see flaws in all of them because they are all human.
The only thing I am pointing out is that for some reason, I had more access to Pentecostal experiences from "door-to-door" service than from other groups. Here in USA, I have had more experience with Evangelical Protestants, (Baptists, etc). From my exposure of three main groups, Pentecostals, Baptists, and JW's, the Pentecostals get more easily fired up from bible discussion. But JW's are just as self-righteous, and closed up, if not more, than other religious groups, but they are usually more cunning with their approach.
For instance, the Pentecostals and Baptists attack JW's in derogatory language, plenty of books out there are found focusing on "cults," and I have read many of them. The language is not pretty. It is insulting to not only JW's, but also insulting to the intelligence of evangelicals as well, by heavy twisting of facts and half-truths. On the other hand, the JW's do not write any books focusing on just one group, they usually attack the Catholics and Protestants in blanket fashion. And the tone of language is more subtle, "smoothed out" compared to the tone exhibited by cultist books. The end result is the same. One is not justified over the other. Both camps fail miserably at portraying Scripture. I see good and bad in both. And I for one, admit candidly that the "shunning" of JW's is as evil as anything evil of Catholics and Protestants. In the shunning department, the JW's win... they take it to the extreme and make the Pentecostals look tame. But the JW's do not kill directly in Vietnam, Iraq or Afghanistan, but indirectly they "kill" as well. Just different methods, but the end result is not so different between the groups. Both camps have a lot of accounting to do before the Father and the Son. I also believe that INDIVIDUALS from any of these groups, if sincere, can find truth and wisdom in God's Word.