Your response is obviously your opinion and I respect that. The bible makes it clear the spirit has many uses and yes one of them is the Bible itself. But It does allow for inspired words directly from God and guidance through spirit to be two different things. The one is a direct communication taken by a few direct forms spoken from Jehovah himself and the other is indirect more subtle guidance.
Of couse one can claim that Jehovah's Witnesses have a knowledge of the Bible superior to any other church or group and if someone, after studying the Bible comes to that conclusion, I can respect that.
And yes this is my opinion of them but I also see this as a sign of the "guidance" at work. You say any Christian group can claim it? This is patently true, in fact they all do claim it but do they show the fruitage of it? I only see the fruitage in the witnesses in a real way literally by how biblically honest they are.
They all do have access to the bible at least but then they choose to ignore it. The bible tells us that most of the major spirit gifts ended with the apostles including inspiration. History proves this to be true. But we have the bible and this "guidence" and People can listen to them or not.
Jesus's parable of the two sons works well for me on this. It's easy to say "yes" but in reality actually do the opposite "no" in action. All these Christian groups have the bible as indeed the Jews had the hebrew scriptures but does it mean they will follow it's spirit guidance? They all seek God in prayer but if they are praying to a false God will they get guidance? They can beg for guidance but if they ignore the first steps of the bible itself how can they gain more?
I'm sorry I don't start threads, I don't have the time to do them real justice.