They reference a lot of scriptures, but they don't study them. They use them to tell you what they want you to know. There are a handful of scriptures that are used over and over and over to prove points, win arguments, "prove" they have the truth, but if you dared to study those on your own, you would find they are out of context, or mean something completely different.
Yes JW can argue circles around bible students of other faiths, but it isn't because they are really proving anything, they are just wearing the other person down. You learn how to get and keep control of every converstation and situation, you learn how to keep up the rapid fire till you wear them down. That isn't really winning a bible debate. When the non-JW however, DOES start to get thru, does stand firm and doesn't get swept up in the rapid fire of questions and scriptures, and is able to make a true biblical point, the JW end the convo, time to move on, you abviously aren't interested in hearing the "truth"
They spout bible study, and yeah there is a little bible in there, but what are you really studying? What is it that gets underlined? Where is it that you find the answers to the questions they ask? What do they really use to study? Try having a "bible study" with a JW without using any Watchtower literature. It won't last long.
Actual "blible study" is frowned on. Reading the bible alone leads to spiritual darkness, to satan. Meeting in small groups to study the bible can and has led to DFing. (I personally think thats part of the reason for dropping the bookstudy) The WTS controls the info, controls what the bible says, what they want you to know.
At first I felt the same, so they have faults, they also have all these great things about them. They do really study the bible, they do know the bible etc. I do believe the average JW is really sincere, and I have nothing bad to say about them personally. The Watchtower Society however, is another story. The longer I am awake, the more I look at it all with both eyes open, the more I research what the literature actually says vs just taking their word for it, etc etc etc the more jaded I get. It's like a beautiful peice of fruit that has worms at the pit. I don't care how pretty it looks, how nice it smells, it is rotton, and once I see that, it is no longer a beautiful piece of fruit, it's trash. (personal opinion)