The Gospel the JWS profess is not strongly supported in the bible, as a matter of fact its tainted with apostasy really.
True Christians hold to all of Jesus's words not just some and disregard the rest.
Nevertheless they still hold their heads up over all other Christian faiths calling others unrighteous when they claim they are the true righteous ones, a contravening oxymoron of theology when you think about it.
I guess every religion has its own self supporting propaganda.