An important element would be time-frame. For both books, the dates they went to the publisher would be significant. What were each of the men engaged in 9-12 months prior to the date the manuscripts were submitted. Did it coincide with low demands on Ayers time? Who did the editors work with?
That he is a liar of the highest order is pretty evident when his first excuse for the Bill Ayers connection was “Yeah I lived in the same neighborhood”. When you closely scrutinize the excuse he gave for not observing the proper protocol during the national anthem it looks like the exact same ideology as Bill Ayers. Like a page out of one of his books.