Are the approaches of the discussed Gurus different?

Review the uploaded, under your lecture notes, paper and read about quality and the quality gurus. Compare the most important Gurus (Deming, Juran, Crosby, Feigenbaum, Ishikawa, Taguchi, Shingo) to each other. Where are their approaches similar, and where do they differ? How do the western-world gurus differ from their peers in Japan?