You can’t really compare Bohm & Wersi to Yamaha as Bohm & Wersi are Organ first with arranger capability’s, whereas the Yamaha is Arranger first with organ sounds available, the style requirements for organ play and arranger play are different, this is why Bohm and Wersi allow you to load in Yamaha styles so that it makes it easier for arranger players to transition to organ play. (In an arranger styles are paramount, whereas in an organ they are way down the list, hence when you listen to organ players they mainly use just drums and vamp chords)

Bill