Since this discussion has already been started, understanding the credibility of the person should be in first place before dwelling into details. A. Wahab was disapproved, dishonoured and refuted by Ahlus-Sunnah wal jama'a and before anyone else, by his great learned father and brother who were Hanbali. None of his work is according to Quran and Sunnah as he refused all the opinions and rulings of the Imams of Ahlus-Sunnah except those of Ibn Taymiyyah and his student Ibnul Qayyim.
Cults like wahabis, salafis, ahlul khabees etc are all deviants by not following Ahlus-Sunnah. Simple formula. Story ends here.