User blog comment:KirbiMiroir/Shulk's New Moveset!/@comment-25275196-20160405063948/@comment-25275196-20160405073014

Back Slash does far superior damage to Shaker edge even if it isn't from behind. I actually played Xenoblade and know these things. Shaker edge is only useful when inflicting daze. In all, it's his second worst art after Battle Soul (but even battle soul has uses in some circumstances).

Face it, chain attack was a good choice as final smash, but the way the did it was terrible. Unfortunately, they can't use it's full potential, due to it taking too much time, and so Final Boss finisher is a better choice. Sakurai hasn't cared about spoilers before.