After watching the video I'm drawing three conclusions.
1. Two distinct design applications that happen to overlap. Sound bars are designed primarily to provide higher quality audio and improve voicing in comparison to television speakers. No question sound bars are an improvement there. Audiophile separates are designed to provide the highest quality music playback and immersive movie experiences.
2. Sound bar drivers cannot yet match audiophile towers or mini's.
3. Your type of application is important. If you want a non-intrusive solution (no box speakers in the room) to improve television audio without the expense of a full home theatre set-up, the Sonos ARC is a very good alternative. Additionally, the Sonos ARC fills a room and or rooms with good music quality when entertaining guests.