how to use it exactly, for harakari? if this bustard jumps out of the screen with World legacy clash, leaving you with 0 attack monsters on the next turn
From the White Stone you sent to the graveyard. Summon Dragon Spirit of White to banish his facedown Dual Wield while his Shi En is banished as well from Clash. Problem solved.
Look, at the end it all comes down to whoever drew the best hand. Sometimes you´ll have the upper hand, sometimes the opponent will have it. My point is, a BEWD deck has more than enough options to stand up to a Six Samurai deck.
Actually, I am still using Vampires. In an ironic twist, they work well against most of actual meta. Vampire Kingdom checks Neos/RE Fusion and Vamp can steal big mons such as Desperado, AG or BEWD. Not KoG material, I'll admit, but still carries me to Legend.