P-M, you talk like all we need is "focus on Christ", but then you think JWs and Mormons are in error for not recognizing the deity of Christ and for falling (in some sense) into the error of Pelagianism or semi-Pelagianism. So your right hand seems to be unaware of what your left hand is doing. You pretend like its all just "Jesus", but if we scratch a little deeper, we find that you have theological criteria that must be met. Which is it: just "focus on Jesus", or does true faith require affirming some further theological propositions (i.e. the Nicene Creed)?
-A8
The problem with Mormonism and JWism (and Catholicism for that matter) is that those who fall into error do so because their focus is not on Christ and Christ alone, but their primary focus is on their Religion and their Church and the teachings of their Church leaders and their man-made traditions.
When your focus is truly on Christ, when you strip away all the rituals and traditions of men and turn your focus on the risen Lord, then THE LORD WILL LEAD YOU. You have his promise that he will NOT lead you astray.