I would venture to say that a prosperity gospel is just plain baloney. You really have to stretch the Bible badly to get any apparent basis for it, and spirits not from God that do unbiblical things are very rife in the world.
Still, he must have gotten QUITE a smear job outside of the prosperity gospel problem if he, as a public figure, won a libel suit.
First, I strongly, strongly disagree about how Biblical the prosperity gospel, buy that’s theology. The person in question was John Stossel, who falsely and, I think, deliberately edited tape to say something exactly the opposite of what the minister said.